A Swamp Valley reality check
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I'm making a continent with a large valley, "the Great Valley is like a wound in the continent". Swamps are the dominant biome in this valley. It is surrounded by cliffs and inside of it I want there to be a fog that almost never ceases. It is large enough to cover from the equator to a temperate latitude where it snows. A river with many branches (like the Amazon river) goes from the north until discharging into the sea in the south.
Please answer the following questions:
- Could tectonic plates have created a place like this? (My explanation is that they are tearing the continent apart, and then, this valley is emerging. Thus, would also explain the mountains inside of the valley.) If not, what else could have?
- Is it possible to have mountains inside of this valley?
- Is it possible to have swamps dominating this valley? (My "noob" explanation is that the snow from mountains nearby -- or even from the cliffs -- would have a thaw that fills the region with water.)
This post was sourced from https://worldbuilding.stackexchange.com/q/101634. It is licensed under CC BY-SA 3.0.
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