AHAH lol you did not see accurately....dont worry mate, there is a passage at the end of the cavern.....look where the MEGA spawn, you can easily find your way out in the sea ;)
Anyway, nice try :D

i went into flying camera mode and i still couldn't find one thx for the help anyway :)

check better ;)

I drove my car into the hole and I was like oh crap and i thought i had to suicide to get out, but i found the hole at the end of the cave lol

He is right! i went to where the mega spawned (after klling him and looting him) and i cant find an exit!!!

OH WAIT I FOUND IT

you go by the boulder across from the wall and there is a crevice go throught it and there isd like green styuff you can walk through by the xit!!!!

reading this im like buch of idiots like dont complain about map so fast, examine it first, after that give youre judgment and dont destroy motivation sugest improvemnts at first i whas also cuncerned but i found the hole "exit" all because i took my time and looked around you probably just looked once and came here. P.S. great map