Mysterious Cave

The mysterious cave is a location in the Big MT in the Fallout: New Vegas add-on Old World Blues.

Layout
It is located south-southeast of Big MT North Tunnel and southeast of Forbidden Zone Dome Entrance. It has nearly exactly the same layout as Broc Flower Cave, without the radioactive barrels and lit torches. It is west northwest of Elijah's Watch. Upon entering the cave, the player must choose to go left or right. To get to the bottom most part of the cave, where there will be a cavern quite large where the legendary bloatfly lives, you must go left. Going right offers a little loot, and just a few bloatflys.

Notable loot

 * Here you will find the legendary bloatfly. Upon slaying it (if you can) and searching its remains, you will get a substantial amount of bloatfly meat along with other possibly random loot such as 14 Buffout and 17 psycho.
 * Raised area contains mad scientist scrubs or scientist scrubs, scientist gloves and first aid box.
 * The cave also contains around 20 mutant cave fungus.

Appearances
Mysterious cave appears in Fallout: New Vegas add-on Old World Blues.

Bugs

 * The map marker on the compass will not appear making it difficult to find the cave.