The
Podkamennaya Tunguska (, literally
Tunguska under the stones, also
Middle Tunguska or
Stony Tunguska) is a river in
Krasnoyarsk Krai, Russia. It is an eastern tributary of the
Yenisei and has a length of . The name of the river comes from the fact that it flows under pebble fields without open water. As early as 1610 Russians from
Mangazeya had passed the Stony Tunguska's confluence with the Yenisei; by the 1620s Mangazeya
Cossacks and trappers had ascended it seeking fur-tribute from the local
Tungus clans. The
Tunguska event in June 1908 occurred near this river, some SSE of
Lake Cheko.