The butt-dragging extension start to Dining in Hell on the Thermopylae Wall. Sit start low and right matched on a blocky jug (see photo) and traverse up and left, finishing on Dining in Hell. Fun moves.
The Thermopylae Wall is about 150 feet uphill and slightly west of Stinkin' Slopers, and immediately downhill of Balance of Power. This would be a fine place to hold off a vast Persian army with a small band of Spartans. On the right side of this wall is the classic Gates of Fire.
A pad or two.