12 years ago, a farmer from Costa Rica Manuel Barrantes started digging red clay and volcanic rocks on the site that would build a house underground. The living quarters are located at a depth of from 4.57 to 19, 2 meters. The house has an area of 185, 8 square. m., this is enough for comfortable stay of the farmer's family and guests. In addition, Manuel Barrantes constantly increases his home, conducting further excavations.