The Fallout 3 Deathclaw Sanctuary is a location in the popular video game Fallout 3 that is filled with many dangerous enemies, as well as lots of valuable loot. It can be located in the Northern region of the Capital Wasteland, slightly to the west, and towards the Broadcast Tower KB5. The inside is like a maze, and can be very easy to get lost, so it's important to take your time and to remember which way you've come from.
It is named the 'Deathclaw' Sanctuary because of the terrible Deathclaws that live within its walls. The outside of the Sanctuary is a warning for anyone that dare enter, as skeletons can be found hanging from the walls in a gruesome fashion. The area is also known for producing lots of random encounters in certain areas, so it's wise to keep yourself well-stocked and prepared for anything that might come along.
When entering the cave, it's wise to try to sneak around as much as possible, as the Fallout 3 Deathclaw Sanctuary contains some of the most dangerous enemies in the whole game, and when all found in one small space together, it can be a devastating combination. It's also advisable to get the best NPC follower that you can to help you through the cave. I recommend bringing Fawkes, as he's quite proficient at bringing down the Deathclaws, due to his gung-ho attitude.