By: GeneCooper
Image: Graham Bird, GIGAmacro ⧉
Subject: Callan Bentley, Northern Virginia Community College ⧉

Uploaded: 7 Jan 2015
Last Updated: 7 Jan 2015

1.54 gigapixels
51,144 x 30,075 pixels
170.5 in X 100.3 in at 300dpi

Stromatolite laminations from Ordovician limestone of Franklin Mountains, west Texas.