AkMtnHntr:

You could drill the hole with a rock chisel and hammer. You might use up a few chisels in the process and it would be difficult to get the hole wide enough to accept a 6x6 post.

Or you could rent an electric jack hammer and use it to drill the hole in the rock. It will take a while since electric jack hammers are kind of whimpy, but you're only doing a small job and that is the tool for the job.

KC


Wind in my hair, Sun on my face, I gazed at the wide open spaces, And I was at home.