Now that is a gate!

Gate mechanism, originally uploaded by epredator.

We went for a walk near swanwick and I was amazed at this seemingly over engineered gate mechanism.
The gate is like a re-enforced version of the old level crossing gates where the metal squared off elements fold under gravity.
With this gate though it is a bit more military checkpoint. A large cantilever block can push the gate down (on the right) and the very solid cross braces lift up.
It is really clever.