What are the pros and cons of having an open field fortress vs an in-mountain excavated one?

What are the pros and cons of having an open field fortress vs an in-mountain excavated one? - Red Petaled Flowers

I've been playing Dwarf Fortress for a long time now but I never know how to decide if building a fortress out in the open is worth the higher resource cost.

What are the pros and cons of each method?






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Absolutely NEVER Buy This Type Of Land




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