20260328 11142100 1.0 FALSE DEVA_GIS_National_Natural_Landmarks 002 -117.695405 -117.658749 37.058472 37.114143 1 Geographic GCS_North_American_1983 Angular Unit: Degree (0.017453) <GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.5.0'><WKT>GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433],AUTHORITY[&quot;EPSG&quot;,4269]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>999999999.99999988</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>8.98315284119521e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4269</WKID><LatestWKID>4269</LatestWKID></GeographicCoordinateSystem> 20260205 15022000 20260205 15022000 Jamie Weleber Death Valley National Park NEPA & GIS Specialist 760-786-3200 P.O. Box 579 Death Valley CA 92328 US 20260205 ArcGIS Metadata 1.0 Jamie Weleber Death Valley National Park NEPA & GIS Specialist 760-786-3200 P.O. Box 579 Death Valley CA 92328 US None File Geodatabase Feature Class ArcGIS Pro 3.x 0.1 https://geospatial.nps.gov/portal https://geospatial.nps.gov/portal File Geodatabase Feature Class Eureka Dunes National Natural Landmark Boundary 2026-02-05 Version 1.0 Death Valley National Park, GIS Program National Park Service, Death Valley National Park Death Valley, CA vector digital data This polygon feature class represents the official boundary of the Eureka Dunes National Natural Landmark (NNL) located in Inyo County, California, within Death Valley National Park. The boundary encompasses approximately 4,270 acres of the tallest sand dunes in California, rising 680 feet above the Eureka Valley floor. Eureka Dunes were designated as a National Natural Landmark on May 5, 1983, by the U.S. Department of the Interior in recognition of their exceptional geological and biological significance. The dunes support three endemic plant species found nowhere else in the world, including the federally threatened Eureka Dunegrass (Swallenia alexandrae), Eureka Dunes Evening Primrose (Oenothera avita eurekensis), and Shining Milkvetch (Astragalus lentiginosus micans), as well as five endemic beetle species. The area also exhibits the rare "singing sand" phenomenon. The boundary was digitized from the 2019 NPS Pacific West Region GIS Group map based on National Natural Landmarks Program data. Attachments are enabled on this feature class to store the original PDF map and supporting documentation. This dataset serves as the authoritative spatial representation of the Eureka Dunes NNL boundary for resource management, wilderness planning, NEPA compliance, and GIS analysis within Death Valley National Park. This polygon boundary provides the authoritative spatial extent of the Eureka Dunes National Natural Landmark for use by Death Valley National Park staff in resource management, wilderness management, NEPA compliance, law enforcement, visitor services, GIS analysis, cartographic production, and protection of endemic species habitats. The boundary is used to identify areas subject to special management restrictions including prohibition of off-highway vehicles, sandboarding, and horseback riding to protect the fragile dune ecosystem and endemic species. National Park Service, Death Valley National Park; National Park Service, Pacific West Region GIS Group; National Natural Landmarks Program Jamie Weleber Death Valley National Park NEPA & GIS Specialist 760-786-3200 P.O. Box 579 Death Valley CA 92328 US Death Valley National Park DEVA Eureka Dunes Eureka Valley Inyo County California Last Chance Mountains Saline Mountains Death Valley National Park National Park System Unit Name Thesaurus DEVA National Park System Unit Code Thesaurus surface 1983 2019 2026 National Natural Landmark NNL boundaries administrative boundaries sand dunes geomorphology endemic species threatened species endangered species rare plants wilderness protected areas special designations boundaries environment biota geoscientificInformation ISO 19115 Topic Categories National Natural Landmark NNL boundaries administrative boundaries sand dunes geomorphology endemic species threatened species endangered species rare plants wilderness protected areas special designations boundaries environment biota geoscientificInformation Death Valley National Park DEVA Eureka Dunes Eureka Valley Inyo County California Last Chance Mountains Saline Mountains Death Valley National Park DEVA surface 1983 2019 2026 This boundary is intended for general planning, management, and reference purposes. While efforts have been made to ensure accuracy, users should verify boundary information for legal or regulatory purposes requiring precise delineation. The National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data are not to be used for navigation or land surveying. This product is for informational purposes and may not have been prepared for, or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. Acknowledgement of the National Park Service would be appreciated in products derived from these data. The National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent with the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. The National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. Esri ArcGIS Pro 3.x, File Geodatabase Feature Class true -117.75 -117.55 37.20 37.00 ground condition 1983-05-05 Eureka Dunes National Natural Landmark was designated on May 5, 1983, recognizing the area's outstanding natural features. The dunes are located in the remote Eureka Valley in the northern portion of Death Valley National Park at approximately 3,000 feet elevation. The dune field covers approximately 3 miles in length by 1 mile in width and rises more than 680 feet above the valley floor, making them the tallest sand dunes in California and possibly all of North America. The dunes are estimated to be 10,000 years old and represent an isolated "island" ecosystem separated from other dune fields, which has led to the evolution of unique endemic species. Three plant species are endemic to Eureka Dunes: Eureka Dunegrass (Swallenia alexandrae, federally listed as Threatened), Eureka Dunes Evening Primrose (Oenothera avita eurekensis), and Shining Milkvetch (Astragalus lentiginosus micans, candidate for Endangered Species List). Additionally, five beetle species are endemic to the dunes. The area is also known for its "singing sand" phenomenon, where avalanching sand produces sounds resembling a bass organ note or distant airplane. The Eureka Dunes became part of Death Valley National Park in 1994 with passage of the California Desert Protection Act. The area is managed as designated wilderness with strict protections: off-highway vehicle travel is prohibited throughout the park, sandboarding is not allowed on the dunes, and horseback riding is prohibited on the dunes. Foot travel is permitted and primitive camping is available at 10 designated sites at the northern base of the dunes. The boundary polygon was digitized from the March 2019 map produced by NPS Pacific West Region GIS Group, which depicts the official NNL boundary based on National Natural Landmarks Program data. The original PDF map is attached to this feature for reference. Attachments capability is enabled to store supporting documentation including maps, designation documents, photos, and reports. 1 -117.695405 -117.658749 37.114143 37.058472 Attributes were populated from official National Natural Landmarks Program data, NPS Pacific West Region GIS Group 2019 map, and Death Valley National Park records. All attribute values have been verified against source documentation. Acreage calculations are based on GIS geometry in NAD 1983 UTM Zone 11N projection. Polygon topology has been validated. The feature class contains a single polygon representing the Eureka Dunes NNL boundary. No overlapping polygons, gaps, or topological errors exist. All required attributes are populated. This dataset represents the complete Eureka Dunes National Natural Landmark boundary as designated in 1983 and depicted in the 2019 NPS reference map. The boundary encompasses approximately 4,270 acres. One polygon feature exists in this feature class representing the entire NNL. The boundary was digitized from the March 2019 map produced by NPS Pacific West Region GIS Group, which was based on National Natural Landmarks Program data. The boundary was digitized on-screen in ArcGIS Pro using the georeferenced PDF map as reference. Positional accuracy is estimated at ±50 meters, suitable for general planning and management purposes but not for precise legal or survey work. The boundary should be considered "best available" rather than survey-grade. For legal or regulatory purposes requiring precise boundary delineation, users should consult official NNL designation documents and legal descriptions. The Eureka Dunes NNL boundary polygon was digitized in ArcGIS Pro from the March 2019 map (Topo_California_Eureka Dunes_2019.pdf) created by NPS Pacific West Region GIS Group. The PDF was first georeferenced to NAD 1983 UTM Zone 11N coordinate system using identifiable control points from USGS topographic features. A new polygon feature class was created in the DEVA geodatabase with fields for NNL identification, designation information, geographic attributes, significance, management, and data quality metadata. The red boundary line shown on the 2019 map was traced on-screen using the Editor in ArcGIS Pro to create a single polygon feature. Attributes were populated from the map, NNL Program data, NPS records, and field knowledge. Acres_GIS field was calculated from the polygon geometry. Shape_Length and Shape_Area fields were auto-calculated by ArcGIS Pro. Attachments were enabled on the feature class and the original PDF map was attached to the polygon feature for reference. Topology was validated and the feature was saved. The feature class was then prepared for publishing to NPS Portal as a hosted feature service with attachments capability enabled. 2026-02-05 Jamie Weleber Death Valley National Park NEPA & GIS Specialist Source map depicting Eureka Dunes NNL boundary on USGS topographic base; original PDF attached to feature Eureka Dunes National Natural Landmark Map NPS PWR GIS Eureka Dunes Map 2019 2019-03 National Park Service, Pacific West Region GIS Group National Park Service Seattle, WA map publication date 2019-03 Official boundary delineation for Eureka Dunes National Natural Landmark as designated May 5, 1983 National Natural Landmarks Program Boundary Data NPS NNL Boundary Data 1983 National Park Service, National Natural Landmarks Program vector digital data designation date 1983-05-05 1 DEVA_Eureka_Dunes_NNL_Boundary Polygon feature class representing the Eureka Dunes National Natural Landmark boundary Death Valley National Park Feature Class 1 OBJECTID Internal feature number Esri Sequential unique whole numbers that are automatically generated OBJECTID OID 4 0 0 Shape Feature geometry Esri Coordinates defining the features SHAPE Geometry 0 0 0 NNL_Name Official National Natural Landmark name National Natural Landmarks Program Text value: "Eureka Dunes" NNL Name: String 100 0 0 Full_Name Complete designation name National Natural Landmarks Program Text value: "Eureka Dunes National Natural Landmark" Full Name String 150 0 0 NNL_ID National Natural Landmarks Program identifier code if assigned National Natural Landmarks Program Text value representing NNL Program ID NNL ID String 20 0 0 Designation_Date Date the area was designated as a National Natural Landmark National Natural Landmarks Program 05/05/1983 Present Designation Date Date 8 0 0 Designation_Authority Federal agency or office that designated the National Natural Landmark National Natural Landmarks Program Text value: "U.S. Department of the Interior" Designation Authority String 100 0 0 Federal_Register Federal Register citation for the NNL designation if applicable National Natural Landmarks Program Text value representing Federal Register volume, page, and date Federal Register Citation String 50 0 0 State Two-letter state code USPS USPS State Abbreviations United States Postal Service State String 5 0 0 County County name where NNL is located U.S. Census Bureau Text value: "Inyo County" County String 50 0 0 Acres_Designated Official acreage from NNL designation documents National Natural Landmarks Program 0 999999 acres Acres (Designated) Double 8 0 0 Acres_GIS Acreage calculated from GIS polygon geometry in NAD 1983 UTM Zone 11N Death Valley National Park 0 999999 acres Acres (GIS Calculated) Double 8 0 0 Primary_Significance Primary reason for National Natural Landmark designation National Natural Landmarks Program Geological Designated primarily for geological features National Natural Landmarks Program Biological Designated primarily for biological/ecological features National Natural Landmarks Program Both Designated for both geological and biological significance National Natural Landmarks Program Cultural Designated for cultural or historical significance National Natural Landmarks Program Other Other primary significance National Natural Landmarks Program Primary Significance String 150 0 0 Significance_Summary Brief description of why the area is nationally significant National Natural Landmarks Program, Death Valley National Park Text describing natural features, species, or characteristics that led to NNL designation Significance Summary String 1000 0 0 Endemic_Species Indicates presence of endemic species found only at this location Death Valley National Park Yes Endemic species are present Death Valley National Park No No endemic species known Death Valley National Park Endemic Species Present String 5 0 0 Managing_Agency Primary federal agency responsible for managing the National Natural Landmark National Natural Landmarks Program Text value: "National Park Service" or other federal agency name Managing Agency String 100 0 0 Park_Unit Specific National Park Service unit if managed by NPS National Park Service Text value: "Death Valley National Park" Park Unit String 100 0 0 Unit_Code Four-letter National Park Service unit code National Park Service NPS Unit Codes National Park Service Unit Code String 4 0 0 Region_Code National Park Service region code National Park Service Text value representing NPS region (e.g., PWR for Pacific West Region) Region Code String 10 0 0 Shape_Length Length of polygon perimeter Esri Positive real numbers that are automatically generated Shape_Length Double 8 0 0 Shape_Area Area of polygon in square meters Esri Positive real numbers that are automatically generated Shape_Area Double 8 0 0 dataset EPSG 6.5(3.0.1) Simple FALSE 1 TRUE FALSE