I don't have any kind of story for this one, unfortunately. During the Circuit Breaker in 2020, once we were allowed to leave home for exercise, I went for a walk every evening after dinner, for about an hour and a half. I walked different routes, but about half the time, I would pass by this rock wall at Marymount CC, facing Bishan Ang Mo Kio Park. It was just crying out for a cache to be hidden. So here we go.
Coordinates might be a bit iffy, but shouldn't be too far off. When retrieving the cache, try uncapping it and retrieving the bottom half, rather than entire thing.