We'll set off by the River Stort to Roydon before heading north through Hertfordshire & the pretty valley of the River Ash. Perry Green is about half way, but for lunch we'll continue another mile to Green Tye which has a pub (Prince of Wales) & a village green. Returning, we'll pass through unspoilt countryside earmarked as a 'garden town' northern extension of Harlow - catch it before it's unspoilt no longer!
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