Our tour guide, Dave, was great. He was very knowledgeable and really narrated an interest history of Seattle which is a super-cool city. As for the Underground, to me, it was underwhelming. I was expecting a city beneath the city with artifacts and almost like a ghost town. It was nothing of the sort. Really just like stepping down into a raw, unfinished basement with few artifacts and limited ability to roam around. Again, Dave made this a worthwhile experience though.