Although the oasis is known to have been settled since at least the 10th millennium BC, the earliest evidence of connection with ancient Egypt is the 26th Dynasty, when a necropolis was established. During the Ptolemaid period of Egypt its ancient Egyptian name was sḫ.t-ỉm3w, "Field of Trees".Greek settlers at Cyrene made contact with the oasis around the same time (7th century BC), and the oracle
temple of Amun (Greek: Zeus Ammon), who, Herodotus was told, took the image here of a ram. Herodotus knew of a "fountain of the Sun" that ran coldest in the noontide heat.[9] During his campaign to conquer the [Persian Empire], Alexander the Great reached the oasis, supposedly by following birds across the desert. The oracle, Alexander's court historians alleged, confirmed him as both a divine personage and the legitimate Pharaoh of Egypt, though Alexander's motives in making the excursion, following his founding of Alexandria, remain to some extent inscrutable and contested. Evidence of Christianity at Siwa is uncertain, but in 708 the Siwans resisted an Islamic army, and probably did not convert until the 12th century. A local manuscript mentions only seven families totaling 40 men living at the oasis in 1203. The first European to visit since Roman times was the English traveler William George Browne, who came in 1792 to see the ancient temple of the oracle. The oasis was officially added to Egypt by Muhammad Ali of Egypt in 1819, but his rule was tenuous and marked by several revolts. The British Army's Long Range Desert Group was based here, but Rommel's Afrika Korps also took possession three times. German soldiers went skinny dipping in the lake of the oracle, contrary to local customs which prohibit public nudity. The ancient fortress of Siwa, built on natural rock (an inselberg), made of salt, mud-brick and palm logs and known as the Shali Ghadi ("Shali" being the name of the town, and "Ghadi" meaning remote), although now mostly abandoned and 'melted', remains a prominent feature, towering five stories above the modern town. Other local historic sites of interest include: the remains of the oracle temple; the Gebel al Mawta (the Mountain of the Dead), a Roman-era necropolis featuring dozens of rock-cut tombs;[1] and "Cleopatra's Bath", an antique natural spring. The fragmentary remains of the oracle temple, with some inscriptions dating from the 4th century BC, lie within the ruins of Aghurmi. The revelations of the oracle fell into disrepute under the Roman occupation of Egypt. Another attraction for tourists is Fatnas Island, which became a palm-fringed peninsula located on the edge of a saltwater lake.[citation needed] The lake had been partially drained in recent years because of a plan to limit the effect of rising water levels in Siwa due to agricultural runoff from uncontrolled wells (a major problem affecting the entire oasis); Fatnas Island is now surrounded mostly by mud flats. Robin Lane Fox makes the striking claim that among Siwa's unusual customs, one of great antiquity which survived to the 20th c was male homosexuality and same-sex marriage.
