Take a walk up the Hogsmill River and learn something of the history of this important chalk river. From its source at Bourne Hall were its spring was sacred in pre-historic times  Where Willian the Conqueror legend has  it watered his horse on the way to London Visit its two mills were William IV visited and up to the packing house bridge the last reminder of Ewells gun power industry .Also discover why the pre-Raphaelite artists  found the river a source of inspiration .Meet at the entrance to Bourne HallWalks cost £6 per person and are limited to 20 people per walk.Places must be booked with    David Brooks, dbrooks@epsom-ewell.gov.uk