Located at NASA's Langley Research Center in Virginia, it was designed to prepare astronauts for the Moon landing during the Apollo program.
[1][2] The simulator was made of "canvas slings, steel cables, a small trolley, and a wooden walking surface".
[4][5] This arrangement allowed them to walk along the inclined surface while experiencing only one-sixth (17%) of Earth's gravity - equivalent to the Moon's gravitational pull.
[5] The suspension system used multiple cables connected to an overhead monorail trolley that moved parallel to the walkway.
This setup permitted subjects to walk, run, jump and perform other locomotive activities along the length of the walkway.