The second Avalon Marshes festival runs for a fortnight in July at sites all around the Somerset wetlands. There will be talks, bike rides, picnics, photo and art exhibitions and activities for all ages.

  The BBC radio presenter Chris Sperring launches the festival on July 12 at 11am at the Red Brick Building on the old Morland site in Glastonbury and will be there all day until 5pm to lead walks onto the nearby meadows and marshes.

  The following Saturday, July 19, offers an introduction to “geocaching” at the Westhay nature reserve — a hi-tech treasure hunt designed to immerse you in the landscape. Also on offer that day are canoe tours around the secret world of a reed bed, at the Ham Wall reserve.

  For a full list of the varied events until the final-day family picnic on July 26, see avalonmarshes.org