Lime kiln at canal near Brecon turned into bat cave
17 September 2013 Last updated at 08:02 BST
A former lime kiln near Brecon has been transformed into a home for some of the UK's rarest bats and it appears some have already moved in.
The 19th Century kiln along the Monmouthshire and Brecon Canal has been restored for the lesser horseshoe bat.
Finishing touches were made to the habitat on Monday when the first bat droppings were found inside.
Twelve kilns along the 49-mile (79km) waterway have been restored but only one will be used for bats.
BBC Radio Wales reporter Gilbert John reports for the Good Morning Wales programme.