A team of archaeologists is braving horse flies, spiky vegetation and murky ditches to hunt for mysterious standing stones lost beneath a West Country salt marsh.
The Yelland stone row at Isley Marsh disappeared beneath a thick blanket of silt after the closure of a power station changed the flow of sediment in the Taw and Torridge estuary in north Devon in the 1980s.
theguardian.com/science/2018/jun/27/prehistoric-stone-hunt-under-way-in-devon-salt-marsh