The desert fortress is a location in Candy Box 2. It is unlocked when the player obtains the fortress key from The hole.
At the fortress, there are three rooms. The first requires the player to jump over deadly pits to reach either the Xinopherydon or the chest containing the Unicorn horn. While the player can jump and use Anti-gravity potions to get across this room, using the Rocket boots will make the crossing much easier. The second room is straightforward and just contains the teapot, an enemy with an enormous amount of HP. The third room contains a chest high up in the right corner of the room, and requires the player to make a 'staircase' to reach it (see the Rocket boots article for an explanation).