Update: 2015/06/30
2552 - Baseplate 32 x 32 Raised with Ramp and Pit
2552p02 - Baseplate 32 x 32 Raised with Ramp and Pit with Light Grey and Dark Grey Craters Pattern
Note : Due to the complexity of this pattern, this part could be extremely long to render if you are using very high quality radiosity settings (the picture above took me 7H to render), on low settings time should be more acceptable.
2552 - Baseplate 32 x 32 Raised with Ramp and Pit
2552p02 - Baseplate 32 x 32 Raised with Ramp and Pit with Light Grey and Dark Grey Craters Pattern
Note : Due to the complexity of this pattern, this part could be extremely long to render if you are using very high quality radiosity settings (the picture above took me 7H to render), on low settings time should be more acceptable.