Brown Tentacles told them about a cave with an underground river where they could recharge the battery. Purple checked the map stored in the boat’s computer, he was in no way sure he could trust that tramp. Yes, the cave was marked in the map and the river was easily strong enough to run their onboard electric generator. The passengers were thrown sharply against the back of their cabin as the boat picked up speed. * Chapter 4 The Eerily Spectacular Cave