"It was covered with a vault in about 100 BC." (caption, p.132); “[…] its length is over 900 metres [meters] (985 yards), but its course meanders because of diversions around buildings. Its size is remarkable: in places it is 4.2...
Few previous studies have compared microbial communities in subterranean and surface environments. Chemical analyses used to characterize the surface and cave microbial environments indicated limited exchange between surface and subsurface waters....