The Killpecker Sand Dunes are known for sledding and sandboarding. Effortlessly gliding down infinite grains appeals to adventures of all ages. Novice riders and hikers can play on small dunes and flatter areas, but more experienced riders can find dunes with enough height to create an intoxicating thrill. The combination of all sizes of sand dunes makes this location perfect for family gatherings, or reunions. 4-wheelers, side-by-sides, and other recreational vehicles also enjoy the glittering, sun-kissed sand hills.
Source: TravelWyoming.com
It seems that all the small sand dunes across Wyoming are considered to be part of the greater Killpecker Sand Dunes system or area but when people use the name they are generally referring to these dunes north of Rock Spring Wyoming.