Venture into the unknown by embarking on a journey deep underground and experience a whole new world you never knew existed. Meet a seasoned adventure guide at Conwy Falls and soak in stunning local scenery (on ground level), before kitting up ready to head off on an authentic underground expedition. Journey into the heart of a mountain and marvel at brand new sights. Encounter deep blue lakes that time forgot, lofty caverns, dramatic waterfalls and see abandoned mining gear from yesteryear - all while abseiling off ledges, boating across water, climbing rock faces and waterfalls, tackling traverses and whizzing across zip lines - it's just like The Goonies! Can you handle this one-of-a-kind challenge