Big Sis, following a little behind, saw what happened and was less than interested in making a close encounter. However, she was brave enough to provide a cautious smile and pose for scale. The snake was approximately as long as the girl is tall, which is quite a big snake for our little corner of suburbia.
We later saw a small garter snake (alive), another small garter snake (dead), and a shedded garter snake skin, but none left quite the same impression. In all, it was a good ride and a pleasant Memorial Day.