I ventured into Hafren Forest in Wales on a quest to find the source of the River Severn, following ancient Welsh myths that tell tales of mystical river goddesses. The landscape was alive with rushing streams and captivating folklore, making my hike through Pumlumon Fawr both challenging and spiritually fulfilling. In June, when temperatures hover around 17°C and skies can turn to rainclouds suddenly, wrap up warmly if you plan to explore this region’s mythical waterways on foot.