Today my class watched a mystery doug and it was about how  can the water get underground? I think the water cycle travels into the ground to collect ground water. I think that’s how the water got underground when they were digging it to make a POND can you imagine making a pond! At least I can’t. And the water that is underground I think that is rain water because when it rains it soaks into the ground and when you dig you can see the water.