At Edmonds Lock, looking North towards Old Sly Lockstation we get just a glimpse of a lock gate with the two crabs (what do you think they are?) in clear view. On the upper right we see water rushing over the top of the low dam. Low dams were utilized at Edmonds and very few others. Do you know why or why not? What is barely seen in the lower right? Another crab, other machinery…? Visit The display at the Red Brick school weekends from June 28 – August 31 and find out.