An ancient, mossy bridge is the perfect complement to any rural or river scene. These old and mysterious arched bridges are mankind's way of traversing landscapes that are otherwise decidedly wild.
Interestingly enough, an arch is only kept in position by its own weight – the stones supporting an arch couldn't possibly stay in their position without the stones above them weighing them down. So, while they were very effective and sturdy, their building process was complicated. This usually involved building an entire wooden framework underneath the bridge on which the arch could be rested until the rest of the bridge was built around it.
Rakotz Brücke, Germany
Devil's Bridge In Rhodope Mountains, Bulgaria
