We walk walk walk along fall colored paths with short stubby native trees. Tall evergreen or birch trees in Iceland are planted anomalies designed to create a forest illusion, and in some cases in this rather exposed volcanic land, the illusion works.   Upstream of Hraunfossar, the Children’s waterfalls, the river water flows and churns into a frothy turquoise with a whipped cream top, bashing and smashing its way against jagged lava sides and probably a kayaker’s dream.  We stand over bridges, we take pictures, we do the things you do in the Icelandic fall, and the air is crisp and clear and smells like hot dogs. Oh wait, that’s the nearby cafe. Nevermind.