The Parque Provincial Ischigualasto, also known as (another) Valle de la Luna (Valley of the Moon), takes us back as much as 250 million years to the Triassic period when some of the earliest dinosaurs roamed the planet. It is a spectacular world of fantastic and surreal rock formations similar to North American Parks in Utah such as Bryce Canyon and Zion. It is situated between two sedimentary mountain ranges where the meandering Rio Ischigualasto has carved the distinctive formations as well as exposed a treasure trove of dinosaur fossils including the Eoraptor Lunensas, the oldest known predatory dinosaur! Paleontologists have been kept quite excitedly busy here.