Cut off from the surrounding area by railway tracks in the late nineteenth century, Gunnersbury Triangle became one of the Trust's first reserves when it was saved from development by a campaign run by local people. Since the end of the second world war the woodland here has grown up naturally into a lively ecological community and the reserve has become a sheltered birch and willow woodland with attractive pond, marsh and meadow. Hidden away, the reserves open up before you - so follow the nature trail, listening out for birds or the rustle of a hedgehog and look out for the tunnels of field voles or interesting spiders and ladybirds.