Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The circle faces 270° but the shelter prevents view of the western sky. However, beneath the red circle is a crevice that allows view of the eastern sky. The red circle marks a spot where the sun would shine through the crevice directly beneath the circle on the day of the equinox.
