Complex sentence: A large part of the route east of Llangurig is marked on current OS maps as'dismantled railway', much of the course close to the A470 road through Nant gwynwydd being clearly visible.
Split into simpler sentences: A large part of the route east of Llangurig is marked on current Ordanace Survey maps as "dismantled railway". Much of the course is close to the A470 road through Nant Gwynwydd, being clearly visible.