Because The Cave is built into the existing architecture of the Hotel, there are small variations in sizes.
There are also anomalies, oddballs, and quirks, and an adventurous person could score one of these lockers. You generally get more space for the same price as a standard locker. For it, though, you may need to be a little bit spry or creative.
This, for instance, is an 18-case locker that actually holds over twenty cases. Its owner recently moved into a more adventurous 24-case locker that actually holds about 30 cases.
Curves, corners, crevices.