Hoover Dam Bridge Bypass
(survey assistance)

I rappelled partially down the cliff to bolt on 1ft square laser survey targets.
I also spent several days lowering and raising geologists up and down the cliff so they
could do a geologic survey.

Rich measuring the cliff face on his way down.

We painted the 3 white lines (1ft x 6ft) in the center of  the photo.
This is where the bridge abutments will be.