Rat Man Den #3 & Final Transmission Achievement

Location: Chapter 2 - The Cold Boot (Test Chamber 6)

Final Transmission SSTV Image

The third Rat Man den that Chell encounters won't be the last, but it could be the last that Doug Rattman created, hinted at by the inclusion of the Final Transmission achievement in this den. The SSTV image decodes into a picture of the companion cube on the moon as can be seen above.

The third of his dens in Portal 2 can be found in test chamber 6 in the second chapter.