I don't think it's possible to see over the walls anymore. I've put the newest beta up on the beta testing server for play testing. It's probably good to go. One minor thing -- with your cave paintings, the pixels in the transparent area are white, so when you move away and the texture gets mipmapped, the white pixels blur in with the black giving a funky outline. You might want to fix that. You may also want to make the paintings slightly transparent so you can see a little bit of the rock texture behind them. Maybe make a HR4 version as well, with more detail.