alcaray: You should avoid spoiling things for the folks who want to find things for themselves.
disi: Honestly, this was the most frustrating part of the game. Usually you enter an area and can go anywhere as long as you've got the firepower. In this case you are killed by super-weapons at some stage, until you left the area and completed an unrelated other quest first. If this helps someone to avoid this pain, so be it.
There is a big warning in the quest update when you got close to the turrets. All your NPC will say something close to "F%$%C you! that is a deathtrap". The Skorpion's leader dare you to enter the death zone, And .... you can see clearly the insane HP of those things.
My conclusion is: Welcome to the old school.