Scott:
There is a lot of short grass around the greens at Heathland, but those sleepers are in an area mowed as rough. You probably wouldn't putt from that depression anyway, but the little chip is more intimidating with the sleepers there.
We were actually trying to dig a pot bunker over there to start with, but it was a very small area with drainage coming into it from multiple sides, and it kept caving in. So we went to a grassy hollow, but we wanted it to have some penalty value to it, as a bunker would have.