Plik's Safari

 is a Fallout 3 quest which is added to the game with the Point Lookout add-on.

Walkthrough
The walkthrough is very simple. When you enter the grotto, down the hall you will see a ghoul named Pilk. After you talk to him, you have the option to give him 1,000 caps to compete in a safari. If you accept, continue through the door behind him and head to the center, where 2 men will be there to help you fight the ghoul invasion. Press the button near the center of the isle and keep alive through the ghoul invasion. You can pickpocket the two men for their ammo, it has a funny outcome as the two men can't use their guns and get clawed to death by the feral ghouls. The two others will surely die quite quickly, and the actual fight will be pretty tough. You will face any where from swamp gouls to Reavers (depending on your level). When you are done, head back to Pilk, where he will give you a unique axe, the Dismemberer.

* The safari is repeatable every few days.

It is worth noting that if you have the Ghoul Mask equipped the the feral ghouls will not attack you nor Rip and Jacob.

Strategy
Prior to pushing the button, you can lay out mines or whatnot near the ghoul spawns. It is almost guaranteed that the two other men with you will die. You can stay in the center area, or if you are having trouble, you can go right next to the door that you came in, and camp there. Because there is only one location the ghouls come from that is an ideal location. Of course if you simply want to have some fun zombie killing, bring a Lincoln's repeater, Shotgun, Fatman, Nuka Grenades, Auto-Ax (or any of their variants), or the possibly most appropriate option...the Fertilizer Shovel, if you have it, and send those zombies back to their graves!

Reward
The Dismemberer and 100 XP.

The Ghoul Ecology Perk(5% more damage against ghouls) can be obtained by reading Plik's Journal which you can find on a desk in his room.