A Century-old Subterranean Garden
Forestiere Underground Gardens features sunken gardens and underground rooms from ten to 22 feet below the land's surface. And it was all the work of one man, with just a pick, shovel, and wheelbarrow! Baldasare Forestie...
https://www.neatorama.com/2013/11/10/A-Century-old-Subterranean-Garden/