It measures 277 miles long, up to 18 miles across, and a mile deep ? this canyon isn?t just grand, it?s awe-inspiring. Join us on a journey from Grand Canyon rim to the Colorado River (and back). This seminar explores the canyon?s biology and geology and discusses how to successfully hike rim-to-rim. For ages 18 and up. 6-7:30 p.m. $5 Members; $7 Non-Members. Register online or call 757-595-9135. 524 J. Clyde Morris Blvd., Newport News.