The goal of this prehistoric themed expansion is to fly the cave, collect reputation points and destroy or face the flying Nathus. In a game of Cave Pilot 55 that makes use of the flying Nathus, the cave is slid outward to create a small corridor. This corridor can be used to place the large flying beast in the center of the cave. On top of the regular 'static' challenges, the flying Nathus presents an extra moving obstacle affecting its surroundings. Each turn the beast moves 1 or 2 positions through the cave. Based on the strengths and weaknesses of the flying Nathus, players need to strategically plan and time their route through the cave.