Colossal: Geological Street Art on October 10, 2012 Colossal, Art and Visual Ingenuity by Christopher Published March 29, 2012. An amazing post liked by almost 2k people. Next Previous Comments Be the first to post a comment. Leave a Comment × Your email address will not be published. Required fields are marked * Comment * Name * Email * Website * Please arrange the below number in decreasing order 31582 Notify me of follow-up comments by email.