Having worked in the Columbia River Gorge last summer I couldn't resist the opportunity to go back and volunteer for a few hours at the end of July. The occasion was to celebrate the Craigmore Creations book, Terra Tempo: Ice Age Cataclysm. Told in graphic format, it explains how the ice age floods (aka Bretz Floods) shaped the Columbia River Gorge. Every library in Portland should make sure they have one or two in their respective collections. There's a second volume out in the Terra Tempo series now as well.
The brilliant Ranger Lisa uses the snorkel and fins as a prop to entice the curious public. It's like fishing. Walking around at Vista House with a snorkel on will inevitably hook a tourist who comes up and asks, "Okay, tell me what it's all about." Music to the Interpretive Ranger's ear.
For more on the Ice Age Floods there's a whole Institute.
Jenny Gapp, has twenty years experience as a teacher librarian, four seasons as a seasonal state park ranger assistant, and two summers adventuring with National Parks in an official capacity.