Accumulated Water Creates A Waterbed Made Of Turf

Lawns can form blisters too. And enormous ones which you can jump on, use them as a waterbed made fully out of grass, or poke a hole into if you want to see fluid leaking out. If you are perplexed by what you have read so far, so you might want to watch the video first.
The video was shot on July 3rd, 2012 in Kearney, Nebraska, USA. "When I pulled into work, I noticed the grass was inflated. Upon closer inspection, I realized it was filled with water. As a couple of co-workers arrived, we thought it was cool so I started taking video on my phone," the author of the video said.

What can produce such a phenomenon? Depending on the turf they need to work on, often times, landscapers will lay down a plastic sheet on bad soil then plant fertilizer on good soil laid on the plastic. If this is the case, a water line may have broken and the water gets accumulated under the plastic liner, hence the bubble. The phenomenon seems to occur most often on golf courses, where the blisters get really enormous. Worse case scenario, the bubble could be caused also by natural gas, which, obviously, did not happen in this video.

What happens as a result is a strange looking waterbed made of grass, wobbling before your eyes and calling you to try it out, especially if you are an outdoor person, or simply teasing you to pop them and see what sort of content would leak out, just like the makers of this video.