Terrain to object

Hello!!!
Well, I was wondering is there a way to convert a terrain into an object… not a game Object, but a an actuall 3d model, like obj, 3ds or fbx and open it to an other proggram like blender, and edit it.
If anyone has any idea please let me know!!!

There are certainly existing scripts/assets that will do this. Here’s one example: Unity Asset Store - The Best Assets for Game Making