There is very little information available about this place.
http://maps.yahoo.com/#mvt=h&lat=38.641078&lon=-114.800113&zoom=18
http://maps.google.com/maps?ll=38.641078,-114.800113
http://www.schweich.com/geoNVLinCaveVy.html
http://www.youtube.com/watch?v=nDzVKQcDjnY
It is near the Ward Charcoal Ovens State Historic Park: http://parks.nv.gov/ww.htm