Locks are used for raising and lowering boats between different levels of water on rivers and canals.
Camden Lock is a twin manually-operated lock on the Regent's Canal in Camden Town.
(Drag the green point on the red points to change point of view)
There are many types of lock. However, the most common type is the pound lock, which has a chamber with gates at both sides. Due to limitations in showing the pound lock gates opening/closing in 3D, the following video-presentation is closer to an earlier design with a single gate, known as flash lock.
(For a boat going downstream)
music theme: Amy Winehouse - Rehab (via YouTube)
(For a boat going upstream)
