Today on Ramblings, Clare Balding walks with a group of women who met while on a horse-trekking trip in Outer Mongolia. Firm friendships were formed on that adventure, and since then the group has met many times. For the past five years they've been walking Offa's Dyke bit-by-bit, and they've now reached the section that runs close to Hay on Wye, which is where Ramblings is based this week.

The theme for this series of Ramblings is 'water ways'. This week and next, we explore two different sections of the River Wye.

Producer: Karen Gregor.