Sequoia National Park

The Giant Forest, at an elevation of roughly 6,500 feet, contains some of the largest and oldest sequoias in the world, spread across a three-square-mile grove. The General Sherman Tree, the park's crown jewel, stands 274.9 feet tall and has a base diameter of 36 feet, with a volume estimated at 52,500 cubic feet. Though not the tallest or widest tree on Earth, it holds the record for volume of any single-stem tree. Nearby trees include the President, the third-largest tree in the world by volume, and the House and Senate trees. A 0.8-mile round-trip trail descends 200 feet from the parking area to the base of General Sherman, and the larger Congress Trail (2-mile loop) winds through the heart of the grove with far fewer crowds. Giant sequoias require periodic low-intensity wildfire to release seeds from their cones and to clear competing vegetation, and the park uses prescribed fire to maintain grove health — a practice resumed after decades of total fire suppression had allowed dangerously dense undergrowth to accumulate. Sequoias have bark up to three feet thick that naturally resists fire and disease, but climate change and severe drought have increased their vulnerability.

Sequoia's western foothills rise quickly to the alpine crest, and the park's terrain includes deep canyons, marble caverns, and granite peaks. Crystal Cave, a marble cavern with fragile formations, was long open for guided tours, though it suffered damage in the 2021 KNP Complex Fire and subsequent flooding; visitors should check current status before planning a visit. The High Sierra Trail is one of the park's premier backcountry routes, a 72-mile trail traversing the Sierra Nevada from the Giant Forest to Mount Whitney, typically done over 6 to 10 days. Shorter day and overnight options include the 11-mile round-trip hike to Alta Peak, which offers stunning views of the Great Western Divide, and the Pear Lake Trail, an 8-mile round trip that climbs past watchtower granite formations and alpine lakes. For a less strenuous experience, Moro Rock is a granite dome accessible by a 400-step stairway built by the Civilian Conservation Corps, offering 360-degree views from 6,725 feet over the western foothills and the Sierra crest. The hike is only 0.4 miles round trip but involves 300 feet of steep stairs.

Sequoia's main entrance is on the west side, reached via Highway 198 from Visalia. The Generals Highway connects Sequoia to Kings Canyon National Park, and the two parks are administered jointly with a single entrance fee of $35 per private vehicle, valid for seven days in both parks. The road is narrow and winding, and vehicles over 22 feet are not advised between the Giant Forest and the park entrance. Lodging within the park includes Wuksachi Lodge, the main year-round option, as well as seasonal options like John Muir Lodge and Bear Paw Meadow, a tent-cabin operation in the Sequoia backcountry. Campgrounds include Lodgepole and Dorst Creek, both of which can be reserved, and several first-come, first-served sites in the foothills. The park is remote, with limited services; the nearest full-service towns are Three Rivers outside the park and Visalia about an hour away. Cell service is essentially nonexistent within most of the park. Summer is the busiest season, and parking at the General Sherman Tree and other popular sites often fills by late morning, so arriving early is strongly advised.

Sequoia's large elevation range creates distinct seasonal experiences. The foothills, at 1,500–3,000 feet, are hot and dry in summer, often exceeding 100°F, and are best visited in spring or fall when temperatures are mild and wildflowers bloom. The Giant Forest area, at 6,500 feet, has pleasant summer temperatures in the 70s and receives significant snow in winter, with the road to Wolverton and some campgrounds closing seasonally. The high country above 9,000 feet is typically snow-free only from July to October. Wildlife is abundant: black bears are common and the park uses bear-proof food storage at all campgrounds and trailheads; mule deer, coyotes, and bobcats are frequently seen, and mountain lions, though present, are rarely encountered. The foothills host Pacific rattlesnakes, particularly in summer. Fire is a defining element of the sequoia ecosystem, and visitors may see evidence of recent wildfires or prescribed burns, as several large fires have burned through the park in recent years, including the 2020 Castle Fire, which killed an estimated 10,600 large sequoias — up to 14% of the world's large sequoias — underscoring the urgency of climate-driven fire behavior.