how to use 360 images to make it feel like player is on floor.

I am trying to use 360 panoramic images to make virtual tour in unity using oculus. So I am using 360 images as skybox and OVR camerarig. The problem is that I am feeling like player is in air not on floor, which is looking so unnatural. Is there any other way to use 360 images in which player feel like standing on floor and look natural.

hm might folout your picture in a hemisphere, or a ring ? use an external program(blender,maya) for that