If I'm thinking of the same wall as you seem to be describing, the answer is "it could be", as I think what you are talking about lies on private land at the base of a cliff below an apple orchard up top. Also, if it's the same place, the rock is a shit heap.
Tim Pond's Wall, about 3/4 to 1 mile past the wye, is the first "real" climbable rock, but it's closed for possible nesting right now. You can't miss it, since you park at the fishing ponds right below the cliff band. Hardly anyone ever goes there anyway, with Royal Columns, directly across from the WDFW Wildlife Station, being the first real climbing venue in the river valley.