In the last 5-ish years they've discontinued that particular tour, citing insurance reasons. The tour was a lot of fun, and I'm glad I got to do it and bummed t

In the last 5-ish years they've discontinued that particular tour, citing insurance reasons. The tour was a lot of fun, and I'm glad I got to do it and bummed that others aren't getting to. I got a bit of a "megalophobia" feeling standing beside the immense water main that runs down the southbound tunnel.