Portesham to Abbotsbury Dorset Area of Outstanding Natural Beauty and the Jurassic Coast Team have pulled together a series of lovely short walks for you to enjoy. All of them start at bus stops along the Jurassic Coaster bus route in West Dorset. A diversity of bedrock gave Abbostsbury and Portesham their character, as people put locally quarried stone to use. This ridge is Abbotsbury’s quarry, and a result of tectonic forces rippling north during the formation of the Alps, 25 million years ago. The rock it is made of formed 165 million year ago in a Jurassic sea. Start point: Village Hall bus stop or Kings Arms bus stop, Portesham. Distance: 3.3 miles / 5km. Walking Time: 90 mins not including stops. Route Difficulty: Moderate.