This is the final cache!!! :D
In order to find this cache, you must have found the other "The Martian" caches. You will need to retrieve the information from each of them, put the coordinates in order, and THEN you may be able to find the final. Difficulty and terrain are rated based upon the entirety of the series, also keeping the final cache in mind.
If you’ve found this cache: CONGRATULATIONS! With all of your preparations, all of the crops that you’ve grown, the obstacles you’ve overcome, you have managed to make it not only to MAV 4, but you have made enough renovations to allow the crew to pilot you back to Hermes. You have safely escaped Mars. Please sign and log this cache and provide a short story describing your journey!
Congratulations to pairomedicchick for the FTF! :)