Approximately 65 million years ago, a large percentage of vegetables and animals suddenly became extinct. It was in the late Cretaceous period and there are various theories about it. Some scientists attribute this event to a gradual process that finally led to selective extinction. Others assert that a catastrophe, such as an asteroid hitting the Earth, caused these species mass extinction.
Hiking or walking is an activity practiced in all kinds of terrains and is not restricted to age, gender or physical fitness.
As in every task, there are various levels of difficulty, which can be surpassed gradually as experience is gained. The routes are divided into four types of difficulty: relaxed, medium, steady and difficult.