Ancient pyramidical structures, mausoleums, ruined cities and stone walls, such as the Wargaade Wall, are evidence of an old civilization that once thrived in the Somali peninsula. This civilization enjoyed a trading relationship with ancient Egypt and Mycenaean Greece since the second millennium BCE, supporting the hypothesis that Somalia or adjacent regions were the location of the ancient Land of Punt. The Puntites traded myrrh, spices, gold, ebony, short-horned cattle, ivory and frankincense with the Egyptians, Phoenicians, Babylonians, Indians, Chinese and Romans through their commercial ports. An Egyptian expedition sent to Punt by the 18th dynasty Queen Hatshepsut is recorded on the temple reliefs at Deir el-Bahari, during the reign of the Puntite King Parahu and Queen Ati. In 2015, isotopic analysis of ancient baboon mummies from Punt that had been brought to Egypt as gifts indicated that the specimens likely originated from an area encompassing eastern Somalia and the Eritrea-Ethiopia corridor.