The map I saw on Wiki showed Derna or Durna on the far side, or maybe I was cross-eyed when I looked at it.
Derna is only about 150 miles from the Egyptian border, easy striking distance for Egypt's F-16s and other attack jets without refueling support.
Egypt does not appear to have any aerial refueling capacity of its own, but it has trained with American tankers which means they could hit targets anywhere in Libya with American or UAE or Saudi tanker support.