Moqua is a cave system filled with freshwater and is probably Nauru's most exciting sight. The anonymous entrance is small and leads down to a platform of rocks. From this point the cave doesn't look very exciting or big, but if you step into the waist deep water (which you should) and venture further in, the cave expand in all directions except height. Sadly, there are some trash and graffiti, but it doesn't make it a less adventures. The cave system is connected to the underground lake, Moqua Well, which is an important source for freshwater. Rumor says the system extend to more than 3 km, but don't explore deeper than you can always get out. The story goes that the locals used the cave to hide in from the Japanese occupation forces. Moqua Cave is difficult to find, but use our marker to locate it. There is a container at the road and at the end of the driveway is a house with “Maqoa That” written on it. Follow the trail to the left to you reach a square out of bricks. The cave entrance is to the right-hand side.