Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

denbot

(9,899 posts)
8. Looks like mudstone with fossilized wormholes to me.
Wed Mar 31, 2021, 05:17 PM
Mar 2021

Of course the cavities could be from any number of non biological sources..

Latest Discussions»General Discussion»NASAPersevere: While the ...»Reply #8