You’ll find the giant General Grant Tree within Grant Grove in Kings Canyon National Park. It’s the biggest giant sequoia (Sequoiadendron giganteum) in the entire grove. You can walk the one-third-mile paved loop trail to see the tree. You can also see other impressive features such as the Centennial Stump, the Fallen Monarch, and the Gamlin Cabin.
The less-explored Boyden Cavern is ensconced in Kings Canyon at the well-known Sequoia National Monument. It’s bordered by popular Kings Canyon National Park. This solutional cave of Mesozoic marble is a great show cave that includes numerous types of natural speleothems, such as some rare “shield” formations. Veteran visitors say it’s a convenient stop for a one-hour tour.