A journey to the Tenerife volcano's summit is not solely interesting for the amount of phenomena available for scientific research but far more for the picturesque beauties offered to those who keenly feel the splendors of nature. It is a hard task to describe these sensations for they work on us so much more powerfully the more they are vague. When a traveler must describe the highest peaks, the river cataracts, the tortuous Andes valleys, he risks tiring his readers with the monotonous expression of his admiration. It seems better suited to my intentions in this narrative of my journey to evoke the particular character of each zone. We get to know the features of each region better the more we indicate its varying characteristics by comparing it with others. This method enables us to discover the sources of the pleasures conferred by the great picture of nature.