The Jebel Jais Zipline tour. Stretching 2.83 km, this Zipline is the longest in the world. If you are above the age of 12 and weigh more than 45 kg, this adventure trip is something that you would love. Jebel Jais, located in Ras Al Khaimah, is the largest mountain in the UAE. Apart from being a thrilling experience, you would also be able to enjoy the picturesque beauty of the place. Transportation facilities are provided if you choose the same at the time of booking.