2018-04-17 18:53 tumblrdailyoverview:
A cluster of tetrapods is seen near the High...
A cluster of tetrapods is seen near the High Island Reservoir in Hong Kong. These concrete structures are used to reinforce shoreline defenses and prevent coastal erosion by breaking up incoming waves. The specific shape of the tetrapod allows water to flow around rather than against the concrete and reduces displacement by interlocking.Instagram: https://bit.ly/2EOPhks22°2141.0"N, 114°2231.5"ESource imagery: A Sense of Huber