There's a lake that's a perfect cube

Lake Enriquillo, located in the Dominican Republic, has been measured to be a nearly perfect cube in shape, with each side approximately 7.5 kilometers (4.7 miles) long. This unique shape is due to the lake's formation in a natural depression, which has been flooded by water from surrounding mountains. The lake's cube shape has been documented by satellite imagery and has been studied by geologists to better understand its geological history and formation.