Air Dive in Seattle

This was a freaky and unsettling experience. To wander through passages underground with rusted pipes overhead, wooden planks piled up either side, and railings canted at odd angles, and yet NOT BE UNDERWATER. I tried a deep breath but it did not raise me off the ground, and after a while i stopped checking overhead nervously to make sure my tanks didn't bang or stick on rusticles.

We took the Seattle Underground Tour, a guided walk under the sidewalks and dipping into basements of buildings around Pioneer Square. This bizarre underworld is the rescued remnant of a historical accident; the streets were heaped up higher than the mud, and much higher than the original ground on which the buildings were planted. eventually the city put roofs over the pavements. This was better than climbing a ladder to get up onto the road, and better than tumbling off the street 12-30ft down to the sidewalk to go into a bar or shop. Insanity, greed, and commercial expediency combined to make this tour a) exist and b) good fun.