Arthog Bog in the pretty Mawddach Valley might be a small wetland reserve, but it's crammed full of wildlife and is a wonderful place to see beautiful and rare flowers, butterflies, dragonflies and all manner of birds, including flocks of Siskins and Long-tailed Tits.
It's a slice of mire that's full of the array of flowering plants associated with this habitat. The bog turns yellow in spring with mire flowers including iris and spearwort, as well as the rare and special wavy St John's Wort and 'Touch-me-not' Balsam at the mire and woodland boundary.
A quiet walk looking carefully in the ponds, or alongside the track may reward you with a quick glimpse of a Grass Snake. These beautiful, shy creatures are not poisonous and hunt for frogs in the wet areas. The wet woodland on the fringes of the bog features Willow Warblers and Bullfinches making their homes in the Alder and willow.