Trefriw can be accessed from Conwy along the B5106. Trefriw is famous for the Woollen Mill which still weaves cloth today and exports all over the world.- well worth a visit! The twin lakes of Llyn Geirionydd and Llyn Crafnant are easily accesible to walkers from Trefriw. The trail takes you through woodlands and then as you climb up above Trefriw some breathtaking views back down the Conwy valley. You will then descend to a farm at Penrallt where you may see some unusual breeds of sheep. Continue along the public footpath and the walk will soon bring you to the now derelict Klondyke Mill which was a lead ore and zinc ore processing factory built in 1900. Just a short walk brings you to Llyn Geirionydd which is the only lake in the Snowdonia National Park which allows power boats and water skiing. There are few if any fish in the lake due to water poisoning as a result of the lead from the adjacent metal mines although I do believe it is safe to swim in the lake.Following trail No. 5 from Llyn Geirionydd takes you on the path to Llyn Crafnant. Once at the Llyn Crafnant you can follow Forest Enterprise circular trail around the lake or shorten the walk by about 2.6 miles by missing out the lake walk. You then follow the road downhill towards Trefriw for about 0.8 miles and take a path to your left along a forest trail which provides a more interesting route back to Trefriw.This walk is 8.1 miles or 5.5 miles if you miss out the lake walk. It should take around 4 hours or 2.5 to 3 hours for the shorter route. Walking boots are advisable as there is a total ascent of 1615 feet which makes it a challenging walk.