To get a list of topographical maps that cover a particular area, drag the orange map icon to your point of interest then click the "Find Maps" button. You will be able to download your map on the next page. The 2025 NCKMS Symposium's map database currently contains 273,140 maps. The catalog was last updated on Friday, March 6, 2026.
Bristlecone Convention Center
Great Basin NP
Registration for the 2025 symposium is now open! Early registration discounts end at midnight on September 15. After that, registration packages increase by $50.
After registering, be sure to book your hotel room soon. Our hotel discounts will expire in mid-September. See our host hotel page for more details.
Since 1941 the NSS has been at the forefront of cave science, conservation, and exploration. Join our 8,500+ member community and come caving.
The Spirit Cave mummy is the oldest human mummy found in North America. It was discovered in 1940 in Spirit Cave, 13 miles east of Fallon, Nevada by the husband-and-wife archaeological team of Sydney and Georgia Wheeler.
The Wheelers, working for the Nevada State Parks Commission, were surveying possible archaeological sites to prevent their loss due to guano mining. Upon entering Spirit Cave they discovered the remains of two people wrapped in tule matting. One set of remains, buried deeper than the other, had been partially mummified (the head and right shoulder). The Wheelers, with the assistance of local residents, recovered a total of sixty-seven artifacts from the cave.