The week of April 6-12 takes us from Lunar Day 13 to Day 20. This week we will highlight the Serpentine Ridge viewable on Saturday evening. Serpentine Ridge1: [NE/G12] West of the crater Posidonius in the Sea of Serenity you
Serpentine Ridge: Moon’s Best Example of a Wrinkle Ridge
![Serpentine Ridge: Moon’s Best Example of a Wrinkle Ridge Serpentine Ridge: Moon’s Best Example of a Wrinkle Ridge](http://andrewplanck.com/wp-content/uploads/2020/04/Serpentine-Ridge-reveals-the-ghostly-outlines-of-an-underlying-mountain-range-that-formed-the-inner-ring-of-the-Serenity-basin.-750x350.png)