M25 Titsey Eden source
Post to the east Clacket Lane
Post to the west Titsey Park
This is a footpath and bridle way running from the Westerham Road to Titsey Village. In this stretch it runs through woods and fields, crossing the motorway on a footbridge.
The River Eden is a tributary of the Medway, It rises from a source in Titsey north of Clacket Lane motorway services
Wikipedia. River Eden. Web site