An old flooded slate mine used as a dumping ground for cars in north Wales is in danger of being destroyed by visitors trashing the site, it has been claimed. The eeriness of the flooded cave attracts Instagram photo seekers. The cave, part of the Gaewern slate mine, became a dumping ground for old cars, TVs, microwaves and other rubbish after its closure in the 1970s. It was rediscovered by urban explorers who posted stunning photographs of the scrap illuminated by shafts of sunlight, leading to others braving a perilous 20-metre (65ft) descent and using inflatable dinghies to cross the lake to reach the scrap. Volunteers are now working to remove trash and graffiti

• Instagrammers under fire over litter at Welsh ‘Cavern of Lost Souls’ mine site