Excerpted from Wikipedia: Petra is an archaeological site in the Arabah, Ma'an Governorate, Jordan, lying on the slope of Mount Hor in a basin among the mountains which form the eastern flank of Arabah (Wadi Araba), the large valley running from the Dead Sea to the Gulf of Aqaba. It is renowned for its rock-cut architecture. Petra is also one of the New Seven Wonders of the World. The Nabataeans constructed it as their capital city around 100 BCE.

The site remained unknown to the Western world until 1812, when it was introduced to the West by Swiss explorer Johann Ludwig Burckhardt. It was famously described as "a rose-red city half as old as time" in a Newdigate prize-winning sonnet by John William Burgon. UNESCO has described it as "one of the most precious cultural properties of man's cultural heritage." In 1985, Petra was designated a World Heritage Site.

Evidence suggests that settlements had begun in and around Petra in the eighteenth dynasty of Egypt. It is listed in Egyptian campaign accounts and the Amarna letters as Pel, Sela or Seir. Though the city was founded relatively late, a sanctuary existed there since very ancient times. Stations 19 through 26 of the stations list of Exodus are places associated with Petra. [6] This part of the country was biblically assigned to the Horites, the predecessors of the Edomites.[7] The habits of the original natives may have influenced the Nabataean custom of burying the dead and offering worship in half-excavated caves. Although Petra is usually identified with Sela which also means a rock, the Biblical references refer to it as "the cleft in the rock", referring to its entrance. 2 Kings xiv. 7 seems to be more specific. In the parallel passage, however, Sela is understood to mean simply "the rock" (2 Chr. xxv. 12, see LXX).

On the authority of Josephus (Antiquities of the Jews iv. 7, 1~ 4, 7) Eusebius and Jerome (Onom. sacr. 286, 71. 145, 9; 228, 55. 287, 94) assert that Rekem was the native name and Rekem appears in the Dead Sea scrolls[9] as a prominent Edom site most closely describing Petra and associated with Mount Seir. But in the Aramaic versions Rekem is the name of Kadesh, implying that Josephus may have confused the two places.[citation needed] Sometimes the Aramaic versions give the form Rekem-Geya which recalls the name of the village El-ji, southeast of Petra. The capital, however, would hardly be defined by the name of a neighboring village.[citation needed] The Semitic name of the city, if not Sela, remains unknown. The passage in Diodorus Siculus (xix. 94–97) which describes the expeditions which Antigonus sent against the Nabataeans in 312 BCE is understood to throw some light upon the history of Petra,[citation needed] but the "petra" referred to as a natural fortress and place of refuge cannot be a proper name and the description implies that the town was not yet in existence.

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