Explore the area around Grizedale Valley and Barnacre with the rangers, seeing how human activity has used rivers and brooks over the years. Bring a packed lunch. Suitable for children aged 10 years and over accompanied by an adult. Booking essential. Please contact the Visit Garstang Centre on 01995 602125 or email firstname.lastname@example.org. £4/£3, 5 hours, terrain guide 4, 6 miles.