Moonbeam Outdoor Cinema

 is a broken-down outdoor theater with a few cars and picnic tables. It seems to be a small base for Super Mutants, staging attacks on nearby Big Town.

This is one of the possible locations where The Family is said to have been seen, but unfortunately it's the wrong location.

Location

 * Directly northwest of Big Town, far northwest of Springvale.
 * Directly east of Fordham Flash Memorial Field and Arefu.
 * Southeast of Hamilton's Hideaway and Northwest Seneca Station.

Inhabitants
One Super Mutant amongst the picnic tables, and a Super Mutant Brute armed with a Minigun hiding in a nearby trailer. He has also been seen using a Missile Launcher as well. Exercise extreme caution at lower levels when exploring this area. I went looking for The Family, walked past the trailer, heard the super mutant and was dead from missile fire before I could do anything. You can be ambushed by a Mirelurk Hunter and mirelurks if you explore it in Blood Ties. If exploring without any active quest you will encounter a random enemy (in my case a deathclaw).

Hint: Shooting the vehicles will set off a series of explosions, killing any enemies (or yourself) in the process.

Notable Loot
There is a Pugilism Illustrated on a picnic table in the middle part of this area, north of the theater screen and on top of a Large Destroyed Book.