The week of December 13-19 takes us from Day 10 to Day 16. This week we will highlight Sinus Iridum, located in the northwest sector of Mare Imbrium. Sinus Iridum: [NW/E6] Sinus Iridum (the Bay of Rainbows) formed after the
Sinus Iridum on the Moon: The Bay of Rainbows
![Sinus Iridum on the Moon: The Bay of Rainbows Sinus Iridum on the Moon: The Bay of Rainbows](http://andrewplanck.com/wp-content/uploads/2021/12/Jura-Mountains-on-the-rim-of-Sinus-Iridum-on-the-moon.png)