Question

What does Edward abbey believe will eventually allow the land the land around Glen canyon to return to its natural state?

Answer 1

Closing down the dam and draining the reservoir.

Hope this helps.

Answer 2

Closing down the dam and draining the reservoir

Step-by-step explanation:

Abbey, author of "Desert solitaire", attacks in that same book something he calls "industrial tourism" and argued that closing down the dam and draining the reservoir would be restored to it original state before the human intervention.