Hill
You have a scene going on inside your head. It is of a pair of horns on the ground atop a mountain. No. It is not just one pair of horns. It is many. So many that they create a giant hill atop the mountain, which is already pretty high.
Imagine this hill of horns on top of this mountain. This hill of horns makes it possible for you to get just high enough to touch the top of the sky.
こう
おか
None
How was standing atop this hill of horns on top of a mountain to touch the sky? Eh. It was okay (おか), but that's about it.
Feel indifferent about this hill of horns on top of the mountain. It's all in your head anyways.