Ever looked at a canal lock and thought ' I want to get in that?'

Well now you can as Grindley Brook's lock 5 will be open to the public in a one-off showcase on the weekend of March 3-4 as part of an open day being held by the Canal and River Trust.

The lock, on the outskirts of the town, will be drained and visitors will have the rare opportunity to walk along the bottom of the original 200-year-old drained lock 5, seeing up close one of the finest examples of working heritage in the world.

Fishing taster sessions will also be on offer for visitors throughout the weekend.

The lock is currently drained as a month's repairs work takes place and Wynn Evans, supervisor the Canal and River Trust, is hoping people take advantage of a rare chance.

"Repairing these lock gates is really important work that will let the local canal network continue to be used by boaters, cyclists, anglers and walkers," he said.

"We are opening up the site to visitors to showcase the fantastic work the Trust does, providing a unique and rare opportunity for visitors to see below the water level.

"Our historic waterways are still working as they were designed to 200 years ago and we work year-round to keep them open and safe for everyone to enjoy.

This requires a huge amount of planning, investment and expertise – from civil engineers and hydrologists to heritage experts and ecologists."

The locks are open 10am until 4pm both days and under-16s must be accompanied by an adult.