Hell Gap (Smithsonian trinomial: 48GO305) is a deeply stratified archaeological site located in the Great Plains of eastern Wyoming, approximately thirteen miles north of Guernsey, where an abundant amount of Paleoindian and Archaic artifacts have been found and excavated since 1959.

[5] Excavations from 1961 to 1966, and again in 1995 and after, by archaeologists from the University of Wyoming and the George Frison Institute, have recovered vast amounts of information on Paleoindian lifeways locally, such as the preparation of bison kills and previously unknown projectile points complexes like Hell Gap and Goshen.

[4] Hell Gap has offered insight into the cultural lifeways of Paleoindian peoples because of its rich artifact assemblage of faunal remains and bones, preserved domestic buildings, fireplaces, and projectiles.

[4] The people residing in Hell Gap during the early Holocene were trying to maintain a diet high in fat and protein which is indicated by the amount of bison remains found in Locality II.

The first two discoverers were avocationalists James Duguid and Malcolm McKnight, but professional archaeologists soon took over excavations after they showed several projectile points to George Agogino, professor of Archaeology at the University of Wyoming.

Their papers give a meticulous insight into the projects underpinnings including an inventory of complexes discovered, photographs, maps, thorough descriptions of stratigraphy and artifacts, and detailed sketches of lanceolate points found there.

The focus of recent excavations since 2009 have been to uncover new campsites and projectile points of the Frederick, Hell Gap, and Cody assemblages and to reevaluate past descriptions to update information.