Sue and I were out and about Saturday afternoon and discovered an interesting little underpass. We were looking for Molly's Landing north of Catoosa on old highway 66 and overshot the turnoff. The next side road was on the other side of the bridge (Sunday's jigsaw). When we took the turnoff we noticed that the road went under the railway that parallels the highway on the west. It appears that the little one-way tunnel was constructed around a very large corrugated tube. Simple but effective.
We drove through out of curiosity and found a cluster of 6 or 8 mailboxes which told us that there a group of homes hidden away on the other side. This is the view back the other way toward highway 66.