Zipline (also known as a flying fox, foefie slide, zip wire, aerial runway, aerial ropeslide, death slide or tyrolean crossing)consists of a pulley suspended on a cable mounted on an incline. It is designed to enable a user propelled by gravity to traverse from the top to the bottom of the inclined cable, usually made of stainless steel, by holding on or attaching to the freely moving pulley.
I have tried Zipline at People's Park in Tagaytay city. There's one in Quezon city, the province of Bohol and another in Cebu city. Soon-to-open at the SM Mall of Asia located in Pasay city, Philippines.
Their under-construction website is http://www.mallofasiazipline.com (visit the website soon)