Two versions of a crypt I was asked to make. Needed immediately and for a very modest payment, so it's a less than desirable quality, but well, it's 'only' to educate kids. I wanted just the light shaft and no 'dark mist' in the cellar, so I masked the cloud by a beam roughly the size of the window as well. Sun through glassless window, and a spotlight on the right, which makes the light that comes through the door into the crypt.
The coffin has an image map on top, from which I tried to make a displacement map, but it was lit one-sided, so that's pretty hard. Nevertheless quite reasonable.
The walls of the crypt itself didn't have rounded angles, and I couldn't get them rounded after I made the whole thing. Next time I have to do that right away.