Redefine and redesign those garden stones, that pile of rocks, gabions and trail marking cairns into the perfect mix of science and art. The form system is compact, perfect for camping, extremely durable and assembles easily. The assembled panels form a stabilizing arch while you place the rocks around the form. When the last rock, the keystone, is placed, the form is collapsed beneath the assembled rocks, and if done correctly, a freestanding arch remains.
Suitable for adults up to 90 and children as young as 4.
Check out the YouTube video for a more detailed explanation