Image: r u history 01 075

Archeological Evidences of Man's existence: A, megalithic covered structure ; B, stone circle—horizontal and vertical views ; C, mound with stone entrances; D, megalithic ruins of causeway. - from Ridpath's Universal History: Volume 1 (A Cyclopaedia of Universal History), by John Clark Ridpath, 1895.

- عن كتاب التاريخ العالمي لريدباث: جزء 1، موسوعة، جون كلارك ريدباث، 1895 م.