Хибинские и ловозерские тундры. Т. 1. Маршруты / под ред. А. Е. Ферсмана ; науч.-техн. упр. ВСНХ № 223, Науч.-исслед. ин-т по изучению Севера. – Москва : Изд. Науч.-техн. упр. ВСНХ, 1925. -195 с., [4] л. ил., карты : ил. - (Труды научно-исследовательского института по изучению Севера).

188 investigated so far it was possible under difficult conditions of work, the place being too distant from dwelling. At the end of summer, the parties passed to Luyavrurt, where they succeeded in making a series of valuable discoveries. In 1924, a supplementary party of two was sent out to explore the northwest portion of Luyavrurt, little touched by the routes of the fore­ going summer. The total stretch of routes is about 2400 km. Total number of days of excursions 168. Number of members of the expedition: in 1920 eleven in 1921 — 11, 1922 — 10,, 1923 —7 and 10, and 1924 — 2. The conditions of work were exceedingly severe, the mountain passes being inaccesible to reindeer, and only in the forest zone reindeer could be used as pack animals. The main work was done by man. Provisions, as well as collections were carried by members of the expedition themselves. The principal bases for work were the railway-stations Khibines (1920—21), Imandra (1920, 22—24), Belaya (1923). The nearest mountain bases were arranged at a distance of 6—7 hours of march. For trips in more- distant portions of the massive successively intermediate camps were set, every 10—20 km. The work of the Expedition was strongly hampered by the severe climatic conditions of the country (in 1923, the first snowfall was obs­ erved on August 9), by its orography, by the excess of musquitoes and gnat, and the lack not only of roads, but even of possible pathways, as well as of dwelling. Nevertheless, the results of the expedition were very considerable. The description of the routes and the maps annexed reveal the topographic changes introduced by the works of the expedition into the old map by Ramsay (1893). The fully rearranged map of the Khibine massive will be annexed to the 2-nd volume of the work, the present one containing but. a corrected map of Luyavrurt (scale 1 cmt. = 1 klm.) as well as a map of all the routes in the area of Umptek (Khibines). Materials are being studied at the Mineralogical Museum of the Academy of Sciences of Russia, the total quantity of minerals and rocks brought from the Khibine Tundras attains 4 tons.