The last time we were visited Yellowstone National Park – which is the size of a small country – the boardwalk surrounding the Grand Prismatic Spring was closed for repair and refurbishing. Yesterday, we made it . . . it was packed with people from everywhere in the world . . . but it was worth the crowds. Fumaroles are amazing in that they are boiling hot, occasionally spout a geyser, and have plant and animal life which can live in such extreme conditions (ones which humans consider extreme, though they probably don’t worry about it too much!). Besides the odd flora and fauna, the colors in these pools varies, from yellows and ochres, to deep reds, and finally to the blues and turquoises from the Caribbean or Mediterranean. If you ever get a chance to visit Yellowstone, do so – it’s an amazing place.