This wall was part of my standard workout circuit in Riverside park in the seventies. I guess such things have been replaced by climbing gyms, although the amount of traversing you can do here without colliding with groups climbing up various routes still makes it of some possible utility.

Another wall at the 79th Street Boat Basin, being a bit less than vertical, was perfect for ARC'ing (not that we knew of either the concept or the term in the seventies). But now its proximity to the Boat Basin Cafe might make it more problematic as a climbing exercise locale.