Building a Private Pool in a Luxury Underground House in 149 Days

How long and where did I build?
I have been working very hard with my 3 friends for about 149 Days to completely build, This underground hut is in a very small private jungle in California (United States), We did it together with four people (3 people are builders and one person he is cameraman).

How large is it?
Underground Hut Dimension: Depth 2.6m, width 28m, height 10.2m, I knew the most of viewers it hard to believe but it real 100% handmade with tools in the video.
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