Welcome to Terrain 360 virtual tour of Mallows Bay-Potomac River National Marine Sanctuary! Once you’re in the virtual trail: Click or tap on the screen to navigate along trail, highlighted by the text along the bottom of your screen. Click or tap on the orange hotspots to learn more information about the highlighted area. Use the mini-map in the upper left hand corner of your screen to navigate or skip ahead. And most importantly, have fun!