Description

Ascent to Koryaksky volcano via SSW ridge, category 2B General description of the summit and its location To the northwest of Avacha, separated from it by a saddle-shaped valley with Avachinsky Pass, rises the highest volcano of this group - Koryaksky. Its regular cone, long undisturbed by eruptions, is cut by deep barrancos. In some places on the surface of the cone, lava flows have solidified, sometimes reaching the foot, sometimes stopping halfway. The modern height of the volcano, equal to 3456 m, exceeds all other peaks in the southern part of Kamchatka. The summit of the volcano is slightly truncated to the west, and a modern crater of irregular shape, measuring 90 by 45 m, is located in its lowered part, from which a long lava flow descends to the southern wide barranco. In the northern part of the summit are the remains of an ancient crater, expanded by the action of a glacier to 500 m. The highest point of the volcano is located to the east, and a little lower and further east, on the edge of a cliff, a high lava obelisk rises. The summit and northern slopes near the summit are covered with ice. The depression of the ancient crater is filled with a powerful glacier, descending to the foot with two tongues. The length of the glacial tongues reaches 3-4 km, the width is up to 150 m. The thickness of the ice is measured in tens of meters. West of these tongues lie three more glaciers and many snowfields, filling all the barrancos of this part of the slope. To the south, the slopes of the volcano and the adjacent foothills are freed from snow cover early in the summer and become completely waterless by early August.