The Kruber Ridge is a
mountain
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited Summit (topography), summit area, and ...
ridge
A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The line ...
on the
Iturup Island
, other_names = russian: Итуру́п; ja, 択捉島
, location = Sea of Okhotsk
, coordinates =
, archipelago = Kuril Islands
, total_islands =
, major_islands =
, area_km2 = 3139
, length_km = 200
, width_km = 27
, coastline =
, highest_moun ...
. It is a chain of inactive
volcano
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
On Earth, volcanoes are most often found where tectonic plates are ...
es in the northeastern part of the
Medvezhy Peninsula ("Bear Peninsula") of the island and constitutes part of the
water divide
A drainage divide, water divide, ridgeline, watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges, and may be in the form of a singl ...
between the
Okhotsk Sea
The Sea of Okhotsk ( rus, Охо́тское мо́ре, Ohótskoye móre ; ja, オホーツク海, Ohōtsuku-kai) is a marginal sea of the western Pacific Ocean. It is located between Russia's Kamchatka Peninsula on the east, the Kuril Islands ...
and the
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
. The average elevation is 400-700m, the highest point being
Mount Shibetoro (
Shibetoro Peak,
Shibetoro-dake
(853m). A part of the ridge are the remnants of the walls of a vast
pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...
caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is ...
(
Tsirk Caldera (
Circus Caldera
.
The ridge is named after
Alexander Kruber
Alexander Alexandrovich Kruber (russian: Александр Александрович Крубер; – December 15, 1941) was a Soviet geographer, professor, the founder of the Russian and Soviet karstology.
Alexander Kruber was born in Istr ...
.
{{coord, 45.3958, N, 148.5820, E, source:wikidata, display=title
Ridges of Russia
Landforms of the Kuril Islands
Landforms of Sakhalin Oblast