The Pit is the sixth map added to the game. It was added as a holiday gift to players at the end of 2014.
The Pit map has been removed from the game library. It is available as a download on the game producer's website (link below).
http://www.oovee.co.uk/forum/files/file/867-the-pit-map-by-imgnpro/
MAP
LEGEND
Garage (STARTING POINT)
X
A-469
E-7310
Objective
Lumber
Fuel
Fuel