Guess What

[peterc4]

came across these tea cup shaped structures last week at the botom of a dam overflow, i have emailed the water people but have had no reply yet, they was bolted to the floor and were full of clean water, anybody any ideas

[WRATH OF BOD]

i think they are water breakers.if a large amount of water comes down that shoot it would
make a large tidle type wave.i think it acts as a wave breaker .just my opinion mate