Anonymous ID: 6c3424 Dec. 18, 2017, 4:26 p.m. No.120193 🗄️.is 🔗kun >>0206 >>0208 >>0215 >>0304 >>0307 >>120159 (You) Why are rainbows arched? Keystone? How can you see landmarks over 60 miles away? Wouldn't they be hidden under curvature? Keystone? Expand your thinking. Dome.