How do you turn a mesh into a landscape?

I have a mesh of a landscape that was modeled in SketchUp, but I want this landscape mesh to be an actual landscape in UE. Does anyone know how to convert this mesh into a landscape inside UE?

Hello,

I am not sure that you can import a mesh for a landscape, but you can import a height map. Try to bake your mesh to a height map texture and import that.

Here is a doc for it: