In my first Yellowstone post, I left off at Norris Geyser Basin. From here, I’ll continue south through most of the rest of the geyser basins. Though it’s not what the park is most famous for, Yellowstone is a volcano and much of the park is a giant caldera. All of these geyser basins are located within the caldera.
One the way to the geyser basins, a stretch of road from Norris to Madison Junction parallels the Gibbon River. Upon arrival at Madison Junction, Gibbon River joins the Firehole River to form the Madison River. Along the way, the first roadside attraction is Artists Paintpots, followed by Beryl Spring, and then Gibbon Falls.
Just past Madison Junction is Firehole Falls, which is viewed by driving the short, one-way Firehole Canyon Drive.
The Firehole River then flows out of the canyon and meanders its way through fields, some of which contain thermal features. This area is known as Fountain Flat. Many thermal features drain into the Firehole River, making the water fairly warm. This is what gives the river its name.
Further south is Lower Geyser Basin, which encompasses Fountain Paintpot and Firehole Lake Drive. Fountain Paint Pot is a mud pot. Instead of hot water, mud is heated and bubbles up to the surface. It sounds kind of gross, but it’s actually really cool. In addition, iron and other minerals in the mud give it varying yellow, orange, and pink hues.
Firehole Lake Drive leads past hot springs and a few geysers, as well as two hot springs that are so large they’ve been dubbed Hot Lake and Firehole Lake.
The next attraction is Midway Geyser Basin, home to the largest hot spring in the US and third largest in the world – Grand Prismatic Spring. Grand Prismatic is enormous. It’s difficult to grasp its size because it’s so huge that it’s not possible to see all of it at once while walking through the basin. However, there’s a trail behind Midway Geyser Basin that provides viewpoints of Grand Prismatic from a hillside. From here, the size as well as the brilliant colors of the hot spring are easy to see.
The colors of the hot springs in Yellowstone are related to the temperature of the water. Different species of thermophilic bacteria are adapted to life in water of a very specific temperature range and it is these bacteria that give the hot springs their vibrant colors. Blue and green bacteria thrive in water that is at or near the boiling point, while yellow and orange bacteria prefer slightly lower temperatures.
Continuing south from Midway, we arrive at the small but pretty Biscuit Basin and Black Sand Basin. Biscuit Basin is home to the very dependable Jewel Geyser. It’s by no means the largest geyser in the park, but its eruptions are moderately tall and very frequent. I’ve probably seen it erupt every single time I’ve been to Biscuit Basin.
The most unique aspect of Black Sand Basin is the hot springs and geysers right on the banks of Iron Springs Creek. I always enjoy the contrast of the colorful hot springs right up against the clear blue of the water.
Last but not least is arguably the main attraction of Yellowstone: Upper Geyser Basin and Old Faithful. Upper Geyser Basin is enormous. Everyone visits to watch Old Faithful, which erupts approximately every 90 minutes; however, Upper Basin is home to the largest concentration of geysers in the park as well as many beautiful hot springs. Of note are Grand Geyser, Castle Geyser, and Beehive Geyser. My personal favorite – Grotto Geyser – is also located here.
In addition, Upper Basin is home to Morning Glory Pool, which has a rather sad history. Morning Glory Pool got its name from its brilliant blue color; a color that is no longer present. As one of the main attractions, Morning Glory Pool received a lot of visitors in the early days of Yellowstone’s existence. Sadly, these visitors turned the pool into a wishing well, throwing not just coins but also larger objects (including a wooden chair) into it over the years. Some of these objects clogged the vents and forever altered the pool. Rainbow Pool would probably be a more accurate name today, and though it’s still very pretty, it will never again look the same as it once did.
I feel like I shouldn’t have to say this, but clearly it needs to be said: Yellowstone is a fragile and wild place that should be treated with respect and reverence. It’s so fortunate that we’ve had the foresight to preserve these incredible features and landscapes as a national park. Too often, people seem to forget this, and it’s the careless actions of these few individuals that ruin things for us all. I wrote a whole post about this a few months back, so for now I’ll just end with this:
I absolutely love Yellowstone and it’s a place I encourage everyone to visit…but only if they can afford the park the respect that it deserves.