Head into the unknown during this journey deep underground and experience a whole new world you never knew existed meet an intrepid adventure guide at conwy falls and soak in breathtaking local scenery at ground level before kitting up ready to start an underground expedition journey into the heart of a mountain and encounter deep blue lakes that time forgot colossal caverns and abandoned mining gear all while abseiling off ledges and climbing rock faces and waterfalls next or on a diffe