This,a historical,archaeological and tourist place at AL Hufuf-Hassa,KSA. This is a plateau of limestone, due to weathering the continues mountain has become a structure of pillars and tombs,with big spaces at the bottom and narrow openings and creeks at the top ,giving a scary look from within,and all over it looks like it is a continues ,never ending line of caves. People do go exploring inside,of course some spots are dangerous. Beauty is, this is near a big oasis in the desert.looks great.