Working with cylinders in Hammer

[Tsarbucks]

Hello everyone. I recently began mapping and i'm currently working on a KOTH map that I later plan on turning onto a 5cp map.

Anyways, the point is on the bridge which goes over a 256 hammer unit deep ravine (cylinder). My question is 2 fold. How do I make curving ramps going up to the cylinder and how do I make the cylinder flush with the surrounding ground?

Cheers!

 

[Kube]

Mr. Stan Lee, is this the tutorial you're looking for?

 

[Tsarbucks]

Thanks for the quick reply!