Those are huge logs!
Lol, yes, they are. Sequoia Semperviens or California or Coast Redwood.
"California redwoods are the world's tallest trees. The tallest trees in the world are redwoods (Sequoia sempervirens), which tower above the ground in California. These trees can easily reach heights of 300 feet (91 meters). Among the redwoods, a tree named Hyperion dwarfs them all. The tree was discovered in 2006, and is 379.7 feet (115.7 m) tall."