Had a fun little adventure the other day after seeing the wall posted on this website. Decided to go down and check it out myself. Turns out, there is a way around the wall. Attempt this at your own peril as you will likely die. The run back to a gas station is about 10-20 min or so and the towing cost on an Intercepter stuck in rad zone is 58 blue chips.
Not a lot down there. All of the important things are shown in my screens aside from the level 150 Wall Guardians on top of the red wall.