opatow underground route, opatow, poland

ancient antiquity architecture attraction basement cellar cellars centuries corridor dark darkness destination dungeon dungeons europe european exhibition heritage historic historical history indoor indoors inside interior lamp landmark level light lightness mediaeval medieval monument museum old opatow opatowszczyzna original past poland polish rock route sandstone sell shade shadow showcase sight sightseeing site stone storage swietokrzyskie thick through tourism tourist track travel under underground urban walls