Preparing lunar surface . . .

The scenario: There is a rotating lunar elevator that will orbit the
moon and approach the lunar surface five times per orbit. The
nearest approach is 50 feet from the surface.

The Problem: As the rotating elevator descends it may encounter high
spots in the terrain, even some mountain tops around the equator.
These will have to be cleared to allow a clear path for the rotating
elevator.

What are the solutions?

1.) Nuclear exlosive to blow the obstructing mountain top out of the
way. I think this is unlikely considering international treaties
prohibiting nuclear weapons in space.

2.) A kinetic energy mass that is fired into the mountain. How much
mass? What velocity? Do we launch the mass from earth? Do we collect
space junk? Is it cost effective to collect space junk rather than
launching inert mass from earth?

3.) A kinetic energy bomb. A combination hit of explosives and
impact of the delivery vehicle. How dangerous is it to launch
explosives? Is it necessary?

4.) Land a crew and have them plant the explosives strategically to
allow the explosives to work efficiently, where the above examples
would concentrate a lot of energy in a small space and that energy
could remove a lot more material if spread over a larger area, and
if it was buried.

So which would be the best way to clear a path for the descending
phase of the rotating lunar elevator?