All articles by Wretch Fossil are here: http://www.wretch.cc/blog/lin440315&category_id=0
Last updated on Sept. 14, 2016
NASA's Mars rover Curiosity took these images with Mast Camera on Aug. 22, 2016 (Sol 1438) at Murray Buttes, Gale Crater, Mars.
Red box at left contains artificial stone lamination. Beside it are remnants of concrete blocks (red and green arrows). These are different kinds of objects adjacent to each other. Green arrows point to concrete blocks that possess flat surfaces meeting in 90 degrees. See original-sized photo for clarity: www.flickr.com/photos/fossil_lin/29160864896/sizes/o/