Full resolution (JPEG) - On this page / på denna sida - XIV. Among the Natives on the Lower Lena
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highest of these terraces or ancient beaches. Here, ten
miles from the Lena and about 600 feet above its present
level, in a layer of soil composed of turf and mud mixed
with sand, resting on a foundation of solid ice as clean and
blue as steel and of unknown depth, I found large
quantities of drift-wood, evidently brought down by the river
at the remote period when it had its course here. The
length of this period may be imagined from the gigantic
work performed by the river since that time: wearing down
the Kara Ulak mountains, about 1000 feet in height, little
by little, and thus moving its course eastward some ten
miles or more.
Later I found this boskaya, or “rock-ice”, as the natives
call it, on the tundra west of Olenek, with a layer of earth
above, in which the natives had found both drift-wood and
remnants of the mammoth. This, as well as similar
discoveries made on the New Siberian Islands, prove that this
“rock-ice,” and the drift-wood in the earth resting on it,
belong to the period of the mammoth, or even previous
to it. The photograph I took on this occasion may help
to give an idea of this remarkable phenomenon.
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