OpisPressure ridge -- where two ice floes meet.jpg
English: A long ridge of ice that has formed when two floes of thick ice have been squeezed together by wind or ocean currents, with the ice breaking into chunks that pile upward and also downward below the ice. This ice is difficult to cross on foot or with sleds or snowmobiles.
Употреба НАСА-их логотипа и емблема је ограничена Америчким законом 14 CFR 1221.
НАСА-ин сајт хостује велики број слика Совјетске/Руске свемирске агенције и других не-Америчких свемирских агенција. Ове слике нису нужно у јавном власништву.
{{Information |Description={{en|1=A long ridge of ice that has formed when two floes of thick ice have been squeezed together by wind or ocean currents, with the ice breaking into chunks that pile upward and also downward below the ice. This ice is diffic