Odd Fellows Hall is a cave room that was discovered in South Dakota’s Wind Cave National Park in 1891. It was named as such due to a feature on the east side of the cave’s ceiling which resembles the ‘all seeing eye’, as well as three natural rock pockets that look like the three interlocking links of the I.O.O.F (International Order of Odd Fellows). According to the National Park Service, ‘early guides also pointed out two rocks that resembled goats and the “canopy over the Noble Grand” in this room.’

It is theorised that the cave room has a long history of usage, with a cache of ‘nine glass flash powder bottles stashed under a breakdown block on the west side of this room’ being discovered in 2001 whilst restoration work was being completed in the cave.