Правчицкие ворота

Правчицкие ворота — самая большая каменная арка в Эльбских горах в Чешской Республике. Их высота составляет 16 метров, ширина — 26,5 метра, а толщина арки — три метра.

Правчицкие ворота
Правчицкие ворота. chaoss / shutterstock.com

Их образование связано со структурой самих гор, состоящих из песчаника. Рельефы из песчаника обычно образуются за счёт того, что породы под воздействием эрозии разрушаются и потом переносятся в другое место, уплотняясь под воздействием температуры и давления. Такие породы обычно состоят из наслоений, являющихся относительно прочными в поперечнике, но легко размываемых за счёт своей слоистости. Так произошло и с Правчицкими воротами, основания которых были размыты потоками воды, а верхняя арка сохранилась, хотя сейчас и она подвергается эрозии.

Правчицкие ворота
Каменные столбы возле Правчицкой браны, Чехия. Pavel Tvrdy / shutterstock.com

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