From the base of the boulder field, walk the trail left then up following flag tape and a creek bed to the flat base of the wall. Go right(west) about 50m to the boulder. Trepanning is on the back(north) side of the wide boulder.
Here you can add a new climb to the Sendage database.
Please do your best to keep the Sendage database free of duplicates.
Only create a new entry if you can't find the climb in the search results.
If you don't agree with the grade, suggest a new one when you tick the climb off.
Don't intentionally misspell the climb to change the grade!