Community Vision Statement. âThe City of Miamisburg is a progressive and in-. novative community that seeks to promote meaningful. citizen involvement in shaping the Cityâs future, while. preserving the best of the Cityâs vibrant history.â.
The deepest point of the Mariana Trench is called The Challenger Deep , so named after the British exploration vessel HMS Challenger II, and it is located 210 miles south-west of Guam. This depth was reached in 1960 by the Trieste, a manned submersible owned by the U.S. Navy.
The Mariana Trench is part of a global network of deep troughs that cut across the ocean floor. They form when two tectonic plates collide. At the collision point, one of the plates dives beneath the other into the Earthâs mantle, creating an ocean trench.