The horizon is proof that there is curvature. However, your puny mind cannot grasp that idea because you're either beyond stupid or just having some fun trolling us.

ON A FLAT EARTH A HORIZON IS NOT POSSIBLE.

That means the horizon is a product of curvature dumbass. Every single picture you and nomad put up shows curvature this way.

If the earth were flat there would be no horizon. Instead we would see all of Toronto straight across Lake Ontario. Instead we see part of the CN Tower and the tops of a few other tall buildings.

On a flat earth there is no horizon. Its an impossibility and you'll have to come up with a stupid theory of light refraction to explain it to yourselves.

The flat earth movement us just a cult with cult like followers. You may as well be Scientologists. Too stupid to realize you're being duped.