Ponor Saddle (, ‘Sedlovina Ponor’ \se-dlo-vi-'na po-'nor\) is the 1.6 km long ice-covered flat saddle of elevation 2340 mReference Elevation Model of Antarctica.
Polar Geospatial Center. University of Minnesota, 2019 linking Mount Allen and

Mount Liptak Mount Liptak () is a mountain, high with twin summits, located southeast of Mount Craddock in the Sentinel Range of the Ellsworth Mountains in Antarctica. It surmounts Bolgrad Glacier to the west and Kornicker Glacier to the east. It was fi ...

in southern

Sentinel Range The Sentinel Range is a major mountain range situated northward of Minnesota Glacier and forming the northern half of the Ellsworth Mountains in Antarctica. The range trends NNW-SSE for about and is wide. Many peaks rise over and Vinson Mass ...

Ellsworth Mountains The Ellsworth Mountains are the highest mountain ranges in Antarctica, forming a long and wide chain of mountains in a north to south configuration on the western margin of the Ronne Ice Shelf in Marie Byrd Land. They are bisected by Minneso ...

Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. ...

. It is part of the glacial divide between

Bolgrad Glacier Bolgrad Glacier (, ) is the 7.4 km long and 5.7 km wide glacier on the west side of Owen Ridge in southern Sentinel Range in Ellsworth Mountains, Antarctica, situated south of Brook Glacier and north of Sirma Glacier. It drains wes ...

and

Kornicker Glacier Kornicker Glacier () is a glacier draining northeastwards from the cirque bounded by Mount Liptak, Mount Southwick, Mount Milton and Mount Mullen in the southern Sentinel Range of the Ellsworth Mountains in Antarctica. The glacier flows a ...

. The feature is named after the settlement of

Ponor A ponor is a natural opening where surface water enters into underground passages; they may be found in Karst topography, karst landscapes where the geology and the geomorphology is typically dominated by porous limestone rock. Ponors can drain s ...

in western

Bulgaria Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey t ...

Location

The midpoint of Ponor Saddle is located at , which is 1.44 km north of

, 4 km east-southeast of

Krusha Peak Krusha Peak (, ) is the peak rising to 2800 m in Owen Ridge, southern Sentinel Range in Ellsworth Mountains, Antarctica, surmounting Bolgrad Glacier to the southeast and Brook Glacier to the northwest. The peak is named after the Bulgarian educ ...

, and 2.38 km south-southeast of Mount Allen, according to US mapping in 1988.

Maps

Vinson Massif.
Scale 1:250000 topographic map. Reston, Virginia:

US Geological Survey The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March ...

, 1988.

Notes

References

Ponor Saddle.

SCAR A scar (or scar tissue) is an area of fibrosis, fibrous tissue that replaces normal skin after an injury. Scars result from the biological process of wound repair in the skin, as well as in other Organ (anatomy), organs, and biological tissue, t ...

Composite Antarctic Gazetteer The Composite Gazetteer of Antarctica (CGA) of the Scientific Committee on Antarctic Research (SCAR) is the authoritative international gazetteer containing all Antarctic toponyms published in national gazetteers, plus basic information about th ...

.
Bulgarian Antarctic Gazetteer.

Antarctic Place-names Commission The Antarctic Place-names Commission was established by the Bulgarian Antarctic Institute in 1994, and since 2001 has been a body affiliated with the Ministry of Foreign Affairs (Bulgaria), Ministry of Foreign Affairs of Bulgaria. The Commis ...

. (details in Bulgarian
basic data
in English)

External links

Ponor Saddle.
Copernix satellite image Mountain passes of Ellsworth Land Bulgaria and the Antarctic {{EllsworthLand-geo-stub