The local Radnorshire bogeywoman in the 13th century was the giant Moll Walbee. Hay Castle’s gatehouse was reputedly built by her in a single day. The story goes that, crossing the River Wye one day, she felt a piece of grit in her boot, took it out and hurled it across the river. It landed in the circular churchyard at Llowes, where it was long known as Moll Walbee’s Stone: a 7ft-high menhir of hard, pale-grey sandstone.