Estancia Túnel is a stunning 7.8 mile out-and-back trail located near Ushuaia, Tierra Del Fuego, Argentina. It is generally considered a moderately challenging route which takes an average of 3 h 44 min to complete, and is great for both hiking and mountain biking. With beautiful views of the Beagle Channel and the Olivia River, visitors can also marvel at the old barrel factory that is now abandoned and works as an interesting tourist spot. Complete with wildlife such as sea lions and condors, this is sure to be an unforgettable experience for any outdoor enthusiast.