Sweet Juniper!
http://www.sweet-juniper.com/2009/07/feral-houses.html

nature eats houses

"real" Obstructed Views

Some estimate that there are as many as 10,000 abandoned structures at any given time, and that seems conservative. But for a few beautiful months during the summer, some of these houses become "feral" in every sense: they disappear behind ivy or the untended shrubs and trees planted generations ago to decorate their yards.

Prefabricated buildings and flat-pack furniture blend creative designs with sustainable style using portability, modularity and the possibility of mass-production.

The Fortress. The Underground Fortress is an 8th wonder of the world! It is an unbelievable feat of engineering. The Fortress goes a total of 45 feet under the house! That is below sea level! The fortress has over 1600 sq. ft. of living area, plus hundreds of more square feet of passages and secrets rooms. It was all hand dug over a 20 year period, and all the walls were constructed with a small electric hand cement mixer. There are 3 ft concrete walls, using 5-bag cement (20% denser than regular cement). Not only are the walls thick and dense, but the finishing work is amazing quality. These walls keep it a constant 60F degrees year round. It is so well insulated that even one small space heater can heat all 1600+ sqft of fortress space in a few hours. The fortress has amazingly fresh air in it with an incredible air ventilation system that pulls air outside and brings fresh air in, leaving no moldy or musty smell that you commonly smell in basements.

The Fortress goes a total of 45 feet under the house! That is below sea level! The fortress has over 1600 sq. ft. of living area, plus hundreds of more square feet of passages and secrets rooms. It was all hand dug over a 20 year period, and all the walls were constructed with a small electric hand cement mixer. There are 3 ft concrete walls, using 5-bag cement (20% denser than regular cement). Not only are the walls thick and dense, but the finishing work is amazing quality.

Everything having

"The Underground Fortress is an 8th wonder of the world! It is an unbelievable feat of engineering. The Fortress goes a total of 45 feet under the house! That is below sea level! The fortress has over 1600 sq. ft. of living area, plus hundreds of more square feet of passages and secrets rooms. It was all hand dug over a 20 year period, and all the walls were constructed with a small electric hand cement mixer." Full of survival gear, nitrogen-sealed food supplies, etc.