We had a lot of bad rain at my course, and, it crippled some of the bunkers... My ball went into one, and, I generally thought the sand was compacted with the rain, which it does, so, I sank my feet in as you do, realized it was pretty tough underfoot... Made my stroke, and took the biggest chunk of dirt I've ever seen, there was about 10mm of sand below my ball, and I'll be honest, I nearly snapped my wrists!
The ball did actually pop out, but, not very far, so, with my playing partner, I asked if I could play a relief ball in the bunker and drop it where it looked like there was actually a bit of sand... He agreed, so, another stroke, and my ball popped up and out of the bunker as expected and managed to get onto the green.
So, I played both balls, the original, and the relief, finished the hole and moved on, obviously, marking the scores for both, which was a 7 and a 6... When I got back to the club house, I queried that particular hole and my scores, and, because the trap wasnt deemed GUR, I had to take the 7, but, I highlighted that someone will get injured playing out of it, I nearly did... Another round later, I walked to the hole and there, sprayed in the bunker was the letters GUR!
I went a bit loopy with them in the clubhouse, because it shouldnt take a golfer to nigh-on break his wrists for something to be deemed GUR and, that could cause injury, the groundsmen are there to look after the course, but, they are also there to make sure the course is safe to play... They cut the greens, so, why dont they inspect the bunkers, especially after torrential rainfall, and if needs be, rake them or spray 'em!
I got an apology, and, they have since repaired the bunker... But, I also imagine the head greenkeeper got a canny bollocking too from the commitee, because that could, in reality, could have cost them money if I did actually injure myself playing out of it!