Ancient Man: A Handbook of Puzzling Artifacts

alignments American ancient antiquity appears archaeological archaeologists artifacts basalt blocks bones boulders built canal carved Celts century chamber circle clay coast construction Cuicuilco culture described discovery dolmens early earth earthworks east Easter Island entrance evidence excavation fact feet high figure flint Fusang Glozel graves ground height hill holes human implements inches Indians indicate inscription iron island known Lake Lake Titicaca length Magdalenian Mandan marks megalithic megalithic yards menhirs Mexico miles monuments mound Museum natural Neolithic objects Olmec origin painted pebbles Peru pits pre-Columbian prehistoric present probably pyramids quarry quartzite quipu race region remains resemble ridges river rock ruins runestones sand side similar skeleton skull slabs slope specimens stone stone circles Stonehenge structure suggested surface tablets temple terraces thick tion tribes tumuli valley wall width