Shelter Systems tunnel-shaped shelter was designed for those who wish to cover a rectangular space. Both sizes of the sturdy yet lightweight CrystalCave have been used by imaginative customers for a variety of outdoor uses, for instance, as carports and workshops! CrystalCaves can be placed end to end to produce a longer enclosure. The CrystalCave is freestanding and portable. It's covered with a strong, waterproof ripstop film. CrystalCaves have been used as emergency relief shelters in Guatemala by the United States Government.

Easy Set Up
Your CrystalCave™ arrives with all hubs and clips attached. Just slip the interchangeable poles into the hubs and in 40 minutes your CrystalCave is complete. It's very easy. Once up, you may lift or turn your CrystalCave into position. If your CrystalCave needs to be transported or stored, it can be disassembled in 5 minutes by removing the poles and rolling it into a compact bundle. You can dramatically extend the sun life of your CrystalCave by storing it when not in use.

Sturdy Design
The strong woven, laminated ripstop film used in all our structures has been treated with ultraviolet inhibitors to insure extra long life. (The translucent film used in our CrystalCave Greenhouse transmits 90% of visible light. ) Unique to Shelter Systems' structures are the molded clips at each hub. They are made of an extremely durable plastic. The importance of these components lies in the fact that they grip the film without puncturing it - there are no weak points to tear out in Shelter Systems structures.

Proven Performance
The tension achieved by the network of hubs and poles keeps the film stretched tight in the wind, preventing tear through wind vibration. The CrystalCave's doors (one at each end) have been designed to bypass the need for zippers. We use hook closures. Zippers are notorious for breaking after a short working life. Our experience has shown that, without them, our doors can't malfunction! An added benefit: there is no sill of material spanning the entrance at ground level. This means that when the doors are open, you have complete access for rolling wheeled carts in and out.

 

Complete Shelter System
The CrystalCave comes complete with clips and connectors attached to covering, poles, stakes, and instruction manual.

A CrystalCave™ used as a workshop.