Large spherical tent customized

In May 2013, a spherical object resembling a UFO appeared on a camping site in a small town in England.  Originally, it is the latest kind of tree Tent, because of its shape is spherical, so it is called "spherical tent", is a Camping Tent made of Waterproof cloth.
The tent is fixed to the tree crown with eight ropes, approximately 3 meters above the ground.  The framework of the tent is made of white wax wood and recycled aluminum from the local forest, and the top cover is entirely made of waterproof cotton.
Overnight inside.  The interior of the tent is illuminated by LED lights, and there is also a stove inside.  In cold seasons, wood can be burned to make a fire for warmth.