Chalk track across the plain to Yarnbury castle, Caution crossing the A303 traffic at 70+mph. Follow track to mast right turn and take the right track at fork down hill and ride under the A36 into the Langford follow road through to T junction turn R track 20 m on left narrow 8% climb top of climb take R at fork into Grovely woods R at T on to road R then L on to Ox drove concrete World War 2 storage site, Slow through estate farm.