It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "When Allah Almighty manifested Himself to Musa bin Imran (peace be upon him), seven mountains flew off (in pieces); five of them are in the Hijaz and two in Yemen. In the Hijaz: Uhud, Thabir, Hira', Thawr and Warqan; and in Yemen: Hasur and Sabir."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ata except Talhah bin Amr."