Just found out what this man made pond was built for, it for cutting out ice blocks before electric refrigerators. This was for the real ice boxes that used a block of ice to keep food fresh The excitement starts after 19:00 .I was fighting lots of water pressure but I found it easier to just let the leaves pass through by scraping mt feet and the rake back and forth. As I was raking it created an undertow moving crap from the bottom of the lake over instantly and that is what took so long, I gave this my own inspection 5 months back and the grate is safe but the underground pipe is not and It is in the process of failing. The rock I found may have just fallen in. This time I got before and after video of the end. A shovel would not work well for this job so stop commenting that