A small cabin that hides a large Institute laboratory underneath. Outside it you shouldn't meet any enemies, but on the way you can be attacked by radscorpions and mole rats.
In order to get to the complex, you must take the key from the suitcase. It is used for opening the hatch in the middle of the room.
When you're inside, watch out for synths. Luckily, there are only few of them.
Try to search through all levels of the complex, you can find many valuable items here. However, watch out for traps.
At the bottom of the complex you will find X-01 power armor.
Also at the bottom, but this time in one of the corners of the room, you will find an advanced safe. Next to it you will find U.S. Covert Operations Manual. The terminal on novice level will allow you to activate the elevator again, it will take you to the surface. Watch out, after using it two robots will activate.