Took a little adventure to the Glory Hole, which is a 28 ft full pipe spillway for Lake Berryessa. The water is 50 degrees, so there wasnt much swimming done.<br>Looking right down into the overflow spillway shaft in the vartry reservoir in Roundwood, county Wicklow, Ireland. Its enormous. The tunnel at the bottom of the .<br>Harriman dam morning glory spillway in Windham county, Vermont, USA. This inverted bellmouth spillway acts like a giant drain and stops the water level of the .<br>The Glory Hole spillway at the Vartry reservoir in Roundwood, county Wicklow, Ireland. This inverted bell mouth spillway prevents the water from rising high .
