ZenGold is the newest gold backed crypto-currency to hit the markets as ICO set for May 26. Last week the nation of Dubai announced the creation of a blockchain based crypto-currency that would be backed by physical gold, and would be compliant with the new dictates of Sharia law finance.
A gabion wall is a retaining wall made of stacked stone-filled gabions tied together with wire. Gabion walls are usually battered (angled back towards the slope), or stepped back with the slope, rather than stacked vertically.
Note the internal lines of gabions to reduce and compartmentalize mortar effects. The Hesco bastion is both a modern gabion used for flood control and military fortification and the name of the British company that developed it in the late 1980s.