I was sitting on the left side of the plane. That gave me a good view of the south toward Mexico.
Not long before landing, I could see the desert, some mountains in the direction of Mexico and a couple of reservoirs that I wasn’t able to identify.
I’m guessing the dry looking areas I saw were part of the Sonoran Desert including the Colorado Desert. I might have even seen a little bit of the Anza-Borrego Desert State Park.