Surely. Look at the pyramids.. awesome engineering.
You're just being difficult.
Is this dam natural or un-natural?
And I repeat.. quibbling over construction materials aside.
Why is a beaver dam natural and a human dam isn't?
A dam is a dam.
There are all kinds of limestone based architecture that have existed for more than a few hundred years.
Surely. Look at the pyramids.. awesome engineering.
You're just being difficult.
Is this dam natural or un-natural?
And I repeat.. quibbling over construction materials aside.
Why is a beaver dam natural and a human dam isn't?
A dam is a dam.