On day four of our Yellowstone trip, we drove down from the Madison Campground to Old Faithful, exploring the Midway Geyser Basin on the way.

With a little detour for bison by Fountain Flat Drive:

Midway Geyser Basin:

Boardwalk:

Runoff:

Blue thermal pool:

Jenn:

Green thermal pool:

Boardwalk and geysers:

Geysers:

Then on to the Old Faithful area; here’s the visitor center:

Old Faithful lodge:

Old Faithful geyser, with a crowd watching it erupt:

Back at the campground, and the nearby Madison river:

On day five of our Yellowstone trip, our second full day in the park, we drove up from the Madison Campground to the Mammoth area.

On the way, a stop at Gibbon Falls:

The Gibbon River below the falls:

Sheepeater Cliff:

Arriving at Mammoth, we saw some elk lazing by a building:

While eating lunch on some grass, the rangers started getting excited about elk moving nearby, telling everyone to give them space. A female and young elk wandered through the grass where we had been sitting:

Followed by a bull, who was trying to get them to go back to the others:

The elk back by the building:

The Mammoth terraces:

A nearby bridge and valley:

On the way back to the campground, we encountered a bison jam; just a bison slowly wandering down the road, followed by a line of cars:

On day six of our Yellowstone trip, the third full day in the park, we explored the Norris Geyser Basin.

An unintentionally memorable hike, as Jenn tripped on a root and knocked me over, gashing my knee. It looked worse than it was, though; I was able to continue without too much difficulty.

The Norris Geyser Basin map:

Emerald Spring pool:

The Steamboat Geyser; apparently it hasn’t gone off for months, so we were excited to see it erupting; it continued for the entire time we were there:

Jenn’s father was excited to see it erupting, since it hadn’t all the many previous times he’d visited the park over the years:

Looking downhill:

Blue thermal pool:

Orange themal pool:

Another thermal thingy:

Another thermal pool:

Puff ‘n Stuff Geyser:

Geyser valley:

Steamy:

Steamy pool and cave:

Yellow Funnel Spring:

Geyser basin:

Pool and vent:

Muddy geyser:

Thermal pool:

Pool:

Geyser basin:

On day seven of our Yellowstone trip, the fourth and last full day in the park, we had a grand time visiting the Grand Canyon of Yellowstone, plus a dusk trip to the Grand Prismatic Spring.

The Grand Canyon of Yellowstone:

Waterfall:

Jenn taking photos:

Waterfall:

Family pic at Artist Point:

On the way back, spotted some more bison:

After dinner, Jenn, Eliza, and I decided to take a sunset trip to Grand Prismatic Spring. On the way, yep, it’s more bison:

Runoff from Excelsior Geyser Crater:

Eliza and Jenn on the boardwalk; it was nice to have the place almost to ourselves:

Excelsior Geyser Crater:

Runoff from Grand Prismatic Spring, in the just-past-sunset glow:

Grand Prismatic Spring:

Reflected moon:

Jenn and Eliza on the boardwalk:

Info signs:

Dusk: