"Four Corners Monument, marking the only spot in the United States where four states (Arizona, Utah, Colorado, and New Mexico) come together." AND/OR: "In November 2007, I led a month-long expedition with Maltese adventurer Mark Borda, travelling into the heart of the Western Desert – an area of immense beauty and isolation.

Our destination was Gebel Uweinat, roughly 700 kilometres west of Abu Simbel, at the point where the borders of Egypt, Libya, and Sudan meet." Fourth = the land of Yam?