Your talking about the Tennessee Pot Cave, google it and be amazed.I guess you havent seen that youtube bust that was built underground a large falke bolder was 1 way in down lots of ladders and the steel doors were massive with big stearing locks with 100s of plants , it looked uncachable... all the hard work and how many $1000 building it an those pescy cops flying by with there Infared,s seen the fields glowing lol
You can have it any were the key is to keep it cool ...h4l