This cold he describes as insupportable.

The temperature of the water which had accumulated in the coldest parts of the cave was 48 deg..8, considerably higher than the surrounding atmosphere; from which Pallas concluded that the cold of gypsum-caves is due to the acid vapours which are generally observed in grottoes of this description.
In May 1770, he found snow on the sloping entrance to the cavern of Loekle, in the neighbourhood of the Oufa; but the air of the interior was not colder than was to be expected in a deep cave.
Sir R.Murchison wrote to Russia for further information with respect to this cave in January 1865, and again in the beginning of April, addressing his second enquiry to the Secretary of the Imperial Academy.
In reply, the Secretary says that he is not aware that any thermometric observations have been made in the cavern.

He encloses a short statement by M.Helmersen, one of the members of the Academy, to the following effect:--About 50 versts SE.

of Miask, in the chain of the Ural, is a copper mine, called Kirobinskoy, which was abandoned more than fifty years ago.

On the 7th July, 1826, M.Helmersen found a thick wainscoting of ice on the sides and roof and floor of the horizontal gallery, within 10 feet of the entrance.