What is the name of this abandoned landform?

It's a very obscure landform, not well-known by most people. It's situated directly between two very well-known, large landforms everyone is acquainted with. This landform used to produce a wide variety of products, but has since been abandoned. No one is allowed within two miles of the area. What's... show more It's a very obscure landform, not well-known by most people. It's situated directly between two very well-known, large landforms everyone is acquainted with.

This landform used to produce a wide variety of products, but has since been abandoned. No one is allowed within two miles of the area. What's the name of this place? I've forgotten.

Please and thank you.
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