As we left the Mud Volcano and drove, along the way, we spotted a very large herd of Buffalo on our way to Upper and Lower Falls, and the rare treat, we got about 5 feet from a Buffalo crossing the Road… the kids loved the fact that we were so close to it. As we arrived at Upper Falls in the Grand Canyon of Yellowstone, I don’t know what it is that makes us so “in awe”of water… especially waterfalls… is it the sound? Or, is it the sheer power of that much water falling at such a fast pace? Yes and Yes! I could have sat there all day and just listened to the roar of the water falling off the cliff…. Just the sound is so beautiful… the relaxation it provided was heavenly! The height of the Upper falls is 109ft, and the crest is approx. 80 ft. (Remember, you can view each photo in a larger size if you click on them, it should open it in a new window.) as we got on the road, driving from Upper Falls to the Lower Geyser Basin, we stop along the way, and see more bison, and this time, some calves… they are so cute, much more cow like than the adult Bison. The stop at the Fountain Paint Pots was really neat, we walked along the wooden walkways and could see bubbling mud pots, and geysers, which weren’t as predictable, or as active. Then, Taylor and Emma notice that there are Buffalo footprints in some of the mud pots around the Firehole area and as we were walking along the walkways, we happen to come along a geologist who was leading a tour of the area. He was talking and said that in the winter, when the temperature gets below freezing, that the bison like to come up to the Firehole area to take warm mud baths in the mud pots, because the mud was only about 110 degrees, and was comfortably warm. But as you look at the landscape of the geyser basins in the firehole area, you can see that it looks like desert, largely in part because the soil is so hot and has no nutrients so, nothing will grow, in fact when you look at the trees that are there, they look charred and white near the base of the trees.
These photos are of the Firehole Lake Drive area of Yellowstone. The day we went through here it was cloudy and rainy, but still warm and humid.
The steam in the above photo is from the Great Fountain Geyser, this geyser only erupts every 8-12 hours, so, it is unlikely that most people will see an eruption, but when it does erupt, it shoots about 100ft. into the air. Next we stop at the Grand Prismatic Spring, and several other hot springs. Out of all the incredible things in Yellowstone to see, this is the one thing that you can’t REALLY see except by helicopter or plane. (below, you will find an aerial photo of the Grand Prismatic Spring… which I did not take, but found on the internet) The following gives details about the spring, and tells more about why the colors are so very amazing: There is no doubt that many Native American people were aware of the Grand Prismatic Spring long before Europeans first saw it, but the first records of the spring are from early explorers and surveyors.
In 1839, a group of fur trappers from the American Fur Company crossed the Midland Geyser Basin and made note of a “boiling lake”, most likely the Grand Prismatic Spring[2], with a diameter of 300 feet (91 m).
In 1870, the Washburn Party, led by General Henry D. Washburn, visited the spring, noting a 50-foot (15-meter) geyser nearby (later named Excelsior[3]).[4] The vivid colors in the spring are the result of pigmented bacteria in the microbial mats that grow around the edges of the mineral-rich water. The bacteria produce colors ranging from green to red; the amount of color in the microbial mats depends on the ratio of chlorophyll to carotenoids. In the summer, the mats tend to be orange and red, whereas in the winter the mats are usually dark green.[5] The center of the pool is sterile due to extreme heat.
The deep blue color of the water in the center of the pool results from a light-absorbing overtone of the hydroxy stretch of water [6]. Though this effect is responsible for making all large bodies of water blue, it is particularly intense in Grand Prismatic Spring because of the high purity and depth of the water in the middle of the spring. The spring is approximately 250 by 300 feet (75 by 91 m) in size and is 160 feet (49 meters) deep. The spring discharges an estimated 560 gallons (2000 litres) of 160°F (71°C) water per minute.[7] (The above was taken from Wikipedia.)



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