Make a few unprotected moves to a ledge. Small cam placements (green Alien/blue TCU) can be found here. Then a little friction will get you to and up the crack. At the top move around the right side of the giant block to the tree and anchors shared with The Ethereal Crack.
This route is easily toproped after leading The Beelzebub Corner.
Location
Just beyond The Echo Roof itself lies a giant leaning flake, The Ethereal Crack Buttress. This route climbs the right of two cracks on the buttress.
its pretty important to add that even if you are a 5.10 climber the moves to acess the crack are mandatory 5.7 unprotected, there is however a small slot on the traverse ledge that can take a small tri cam in a horizontal but use caution as even if you do fall above that piece you are looking at a ledge fall.
This crack is a lot harder than it looks from the ground. With sharp fingerlocks, long reaches and a run out start this climb really makes you work for it.