I went back just to take this picture---in fear of getting crashed
It should be kinda obvious that you don't wanna go into a sinkhole (sunkhole) named after Satan.
I tried and the result is
My 12 part of the game, got bugged---- Because the whole computer crashed after I went into the sinkhole.
Hmm and I was in a bad mood after the crazy hard boss of the volleyball net(part 11), really that net most be buged I found several forum post etc where other people asked about it. I had to go and buy another fire weapon to defeat it.
