People whose houses are built on top of a series of mines in Bath have been given the chance to see the underground network for themselves.
The mines were shored up with concrete and steel last year
Thousands of residents in the Combe Down area of the city endured years of uncertainty after their homes began to subside into the unstable mines.
House prices dropped and homeowners had difficulty getting insurance.
But last year the mines were stabilised by emergency work which saw the passageways shored up with concrete.
On Saturday groups of residents took 20-minute guided tours to see inside the mines which have caused so many problems.
The city of Bath was built from stone mined at Combe Down, but the mines were abandoned more than 100 years ago and are now home to a community of rare horseshoe bats.
The government has awarded the mines a grant of £154m to create 10km of underground "safe routes".
The funds also help protect the land and properties above, along with long-term bat routes, roosting and breeding sites below ground.