Great Saltpetre Cave
... that Kentucky's Great Saltpetre Cave, which produced saltpetre for the War of 1812, was later used to film part of the 1997 Steven Seagal film Fire Down Below?
... that <a href="./Kentucky" id="mwBho" rel="mw:WikiLink" title="Kentucky">Kentucky</a>'s <b id="mwBhs"><a href="./Great_Saltpetre_Cave" id="mwBhw" rel="mw:WikiLink" title="Great Saltpetre Cave">Great Saltpetre Cave</a></b>, which produced <a href="./Potassium_nitrate" id="mwBh0" rel="mw:WikiLink" title="Potassium nitrate">saltpetre</a> for the <a href="./War_of_1812" id="mwBh4" rel="mw:WikiLink" title="War of 1812">War of 1812</a>, was later used to film part of the 1997 <a href="./Steven_Seagal" id="mwBh8" rel="mw:WikiLink" title="Steven Seagal">Steven Seagal</a> film <i id="mwBiA"><a href="./Fire_Down_Below_(1997_film)" id="mwBiE" rel="mw:WikiLink" title="Fire Down Below (1997 film)">Fire Down Below</a></i>?