Coastal grotto

 is a location in Point Lookout. It is where the player meets Plik, a ghoul who hosts a "hunt" of sorts. Also in this location is Plik's Journal, which, upon reading, grants the player the Ghoul Ecology perk.

Loot
There is a Mini Nuke in the first room to your right after you enter.

Easter Egg
Out side the Grotto swim South East too the boey on the right. When you are at the boey swim down under and you find the Remains of a Dinosaur that look like a T-rex. The loot is some .44 rounds, an axe, two or three baseball, 60 or 70 caps,some pre-war money,a camera, and three scoped. 44 magnums. There is a dead body as well holding to a lever-action rifle and two ammo creates. Sweet! And have a look out for other boeys many things too loot there to. Happy hunting.

Appearances
appears in the Fallout 3 add-on Point Lookout.