Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 628 CANARY ISLANDS—PALM A. [Ch. XXTX. Fiff. G95. of Konigsberg.* We visited, among other places, the beautiful island of Palma, a spot rendered classical by the description given of it in 1825 by the late Leopold Yon Buch, who regarded it as a type of what he called a 'crater of elevation.' Palma is 46 geographical miles west of Teneriffe. Seen from the channel which divides the two islands, Palma appears to consist
Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 628 CANARY ISLANDS—PALM A. [Ch. XXTX. Fiff. G95. of Konigsberg.* We visited, among other places, the beautiful island of Palma, a spot rendered classical by the description given of it in 1825 by the late Leopold Yon Buch, who regarded it as a type of what he called a 'crater of elevation.' Palma is 46 geographical miles west of Teneriffe. Seen from the channel which divides the two islands, Palma appears to consist of two principal mountain masses, the depression between them being at the pass of Tacanda, or at a (map, fig. 695), which is about 4600 feet above the sea level. The most northern o these masses makes, notwith standing certain irregularities hereafter to be mentioned, a con- Tazacorl-e Mt•/£ ru P? ^\Sarlfftreiito \ Pi Geogr. Miles. Fuencaliente Pi Map of Palma. from Survey of Capt. Vidal, sidcrable approach in general form to a great truncated cone, having in the centre a huge and deep cavity called by the inhab- itants ' La Caldera.' This cav- ity (b, c, d, e, fig. 695) is from 3 to 4 geographical miles in diame- ter, and the range of precipices surrounding it vary from* about 1500 to 2500 feet in vertical height. From their base a steep slope, clothed by a splendid forest of pines, descends for a thousand and sometimes two thousand feet lower, the centre of the Caldera being about 2000 feet above the sea. The northern half of the encircling ridge is more than 7000 English feet above the sea in its highest peaks, and is annually white with snow during the winter months. Externally the flanks of this truncated cone incline outwards in every direction, the slopes being steepest near the crest, and lessening as they approach the lower country. A great number of ravines commence on the flanks of the mountain, a short distance below the summit, shallow at first, but g
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