Portrack Marsh - "Portrack Marsh is one of the area’s most important wildlife sites and lies at the very heart of Teesside. Portrack is designated a SSSI (Site of Special Scientific Interest) because of the number and variety of waders it attracts each year. The wetland attracts hundreds of birds each year and is home to mammals, amphibians, insects and wildflowers." "Visitors will find a network of compact aggregate paths giving access to much of the reserve. Those on the north side are a little uneven as they follow what was an old railway line. A tarmac cycleway and footpath leads from the Talpore Inn down to the River Tees, offering fantastic views on both sides of the path" "The most accessible option is to join the cycle path flanking the River Tees. This is reached via the whitewater course. Most of the reserve’s internal footpaths are laid to a compacted and bound gravel. Some of these paths are narrow and require additional care if you are using mobility aids. " - from the Tees Valley Wildlife Trust website