Treasure hunters armed with sledgehammers and crowbars have raided a Welsh beach where a four-year-old girl found a 215-million-year-old dinosaur footprint. Lily Wilder was hailed by scientists after discovering the print - described as the 'finest' of its type found in 10 years - on a beach at Bendricks Bay near Barry. But armed vandals have since descended on the beach to get a glimpse of her find - with environmentalists warning of 'several people' trying to remove rocks with sledgehammers. Vandals could face £20,000 fines for damaging the area - which is on a Site of Special Scientific Interest (SSSI). Treasure hunters armed with sledgehammers and crowbars have raided a Welsh beach where four-year-old Lily Wilder (pictured pointing at the footprint with her mother Sally, father Richard and baby brother George) found a 215-million-year-old dinosaur footprint