How do CH-47 pilots lower the tail during a pinnacle landing? (thedrive.com)

Given the recent rescue of a climber on Mt. Hood by a Chinook, how are the pilots able to lower the tail in this situation? Is this just the natural angle during a hover, or are there some adjustments the pilots can make to the fore and aft collective individually?
A careful balance of nose-up cyclic and decreased collective to stick the aft of the ship firmly in place. Not so much a landing, as flying with the aft gear and ramp planted.