Day 27: Saturday, June 8 (Lake Crowley - Summerdale Campground )
Crossing the Sierra and diving into the furnace.
Route.

Departure at 7:10 AM (earlier than usual) because there’s a lot of road ahead. Bright sunshine and a cool temperature that will drop even more at the small pass between Mammoth Lakes and Lee Vining (only 2°C). I have breakfast at "Lee Vining Solar Project," a well-equipped picnic area with green spaces (I picnicked there yesterday; there was a school gathering with meals, outdoor games, and sports, including soccer—mostly girls). Twenty kilometers past Bridgeport, I turn left onto Route 108 toward "Sonora Pass" and Sonora.
Yes! I didn’t mention it earlier. The direct route via "Tioga Pass" is closed (it won’t open until July 1, 2019). So I have to take a long detour to the north and cross "Sonora Pass" (2,935 meters), which opened on May 30.
The climb to the pass starts at 2,200 meters in a pine forest; snow appears on the ground and becomes more and more present as I approach the pass. The mountain is accessible, and the pass is wide open (no steep walls or drop-offs). Ski tourers and snowshoers have parked their vehicles all over and set off into the area (3°C, June sunshine, not a breath of wind).

The western slope is steeper; the road descends to "Stanislaus River," crosses it, then stays along the mountainside. The river plunges into a gorge where a dam was built, creating "Donnell Lake."

Then it’s a long... long drive to Sonora. The temperature rises until it becomes stifling (what a contrast in the same day! The descent takes you from 2,900 meters to about 500 meters).
This entire landscape of hills (Sonora, Jamestown, Moccasin) is scorching, even if "Lake Don Pedro" looks refreshing.

Meanwhile... the snow is melting in the Sierra.
Yosemite is still far away; hills, plateaus, rivers, a few villages (Groveland, Buck Meadows), and the scenery gradually shifts from yellow tones to green.
And here’s "Big Oak Flat Entrance": three toll booths on a fairly wide road in a forested setting that might remind you of the Jura (on a scorching day) if you don’t look too closely at the conifer species, which must be different. I receive the "National Park Service" tourist brochure and a newspaper, "Yosemite Guide," published monthly on real newsprint (20 pages, May 15 - June 18).
After the "Tioga Road" intersection, on a winding stretch, I realize I’ve arrived in Yosemite.

I recognize "Half Dome" and "El Capitan"; the road descends, crosses the bridge over the river, and is lined by a pedestrian trail following the valley floor. The banks of the trail are submerged by the flow of the "Merced River," which is overflowing generously.
In this area, as soon as you step out from under the trees, "El Capitan" dominates the space.

I don’t venture deeper into the valley and stop at one of the few available spots in the "Bridalveil Fall" parking lot. An easy trail leads to the waterfall.

How tempting it is to get closer! However, the ground is already damp at the end of the parking lot and becomes muddy on the unpaved sections. The stream flowing from the waterfall to the river is carrying a lot of water. But when you look up, you see... or rather, you don’t see anything.
Should I post a photo that shows this? Probably not.
A cloud of droplets obscures the sky, the waterfall, and all the rocks except those in the foreground. The density of the droplets is such that, in addition to not seeing anything, I’m quickly soaked, which is rather pleasant given the temperature.
Next, I go to "Tunnel View." "El Capitan" on the left, "Bridalveil Fall" on the right, "Yosemite Valley" in the middle: an iconic photo of the park.

I’ll come back tomorrow; for now, I cross the tunnel, drive the full length of "Wawona Road," and just after exiting the park, arrive at "Summerdale Campground," where I’ve reserved a spot for two nights.
How did I end up at this campground? Here’s the story—it might be useful.
I had planned to book at one of the park’s campgrounds near "Half Dome Village." Reservations opened on January 15 or 16 at 3 PM (French time). I logged in at the scheduled time; since I’d already booked at Zion NP, my account was already set up on the site. When I tried to finalize the reservation, the site told me that the phone number on my account (my mobile number) was invalid . It wanted a valid U.S. number (and not just any random one; I tried). I didn’t have one on me. Failure.
I logged back in the next day; I had to go to "Summerdale Campground" to find an available spot.