
1) Alpine pinnacle 2) Backward concerns 3) Block glacial 4) Block of glacial ice 5) Block of glacier ice 6) Block of ice on a glacier 7) Crevasse pinnacle 8) Glacial block 9) Glacial block of ice 10) Glacial feature 11) Glacial flow 12) Glacial ice block 13) Glacial ice form 14) Glacial ice formation
Found on
https://www.crosswordclues.com/clue/serac

A serac (originally from Swiss French sérac) is a block or column of glacial ice, often formed by intersecting crevasses on a glacier. Commonly house-sized or larger, they are dangerous to mountaineers since they may topple with little warning. Even when stabilized by persistent cold weather, they can be an impediment to glacier travel. Seracs ar...
Found on
http://en.wikipedia.org/wiki/Serac

pillar of glacial ice
Found on
http://phrontistery.info/s.html

A large block of ice, generally taller than broad, formed at the intersections of crevasses. Most commonly found within, or at the edges, of a glacier or ice cliff. Seracs are very dangerous being unstable and prone to toppling over.
Found on
http://snowheads.com/ski-forum/viewtopic.php?p=1814924

• (n.) A pinnacle of ice among the crevasses of a glacier; also, one of the blocks into which a glacier breaks on a steep grade.
Found on
http://thinkexist.com/dictionary/meaning/serac/

(from the article `crevasse`) ...outer edges; and bergschrund crevasses, which form between the cirque and glacier head. At the terminus of the glacier many crevasses may ... ...curve around to become marginal crevasses near the edge of a valley glacier. Splaying and transverse crevasses may occur together, chopping the ... [2 relate...
Found on
http://www.britannica.com/eb/a-z/s/66
Sé`rac' noun [ French (in the Alps), orig., a kind of solid cheese.] A pinnacle of ice among the crevasses of a glacier; also, one of the blocks into which a glacier breaks on a steep grade.
Found on
http://www.encyclo.co.uk/webster/S/71

an isolated block of ice that is formed where the glacier surface is fractured.
Found on
https://nsidc.org/cryosphere/glossary?page=22
No exact match found.