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Spain is mostly countriside but theres a lot of digging tunnels and building bridges. Maybe not outside Madrid, but it's definitely not flat.
by spaniard89277 4y ago
Spain is mostly countriside but theres a lot of digging tunnels and building bridges. Maybe not outside Madrid, but it's definitely not flat.
- jillesvangurp 4y agoTrue, passing through a tunnel at 300 km/h was interesting when I traveled from Madrid back to Valencia. Basically you feel the air pressure drop in the train. They seem short but when you are inside a tunnel for 30 seconds at that speed, you've traveled 2.5km. And there quite a few tunnels along the way. It's what makes high speed rail hard. You can't have steep turns or gradients. So most hills/mountains have to be either tunneled or designed around; valley need to be bridged, etc.