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Is that also true if the wall is say 5 km wide? (as some plans for the Netherlands propose).
by Scarblac 8y ago
Is that also true if the wall is say 5 km wide? (as some plans for the Netherlands propose).
- irrational 8y agoOf course. The sea doesn't care how wide or tall the wall is. It will just go under it no problem. If the wall were put deep into the ground until it hit bedrock (a quick google search indicates the wall would have to go down at least 20,000 feet), then the water could not get through. But I imagine at that point it would be cheaper to move the entire city. The Netherlands has a completely different geology, so plans for one place can't be compared with plans for the other.