1. The Mariposa Grove of Giant Sequoias is one of the most popular attractions within Yosemite National Park in California, USA. It is home to over 500 mature giant sequoias, with some trees being over 2,700 years old and standing at an impressive 300 feet tall. The most famous tree in the grove is the Grizzly Giant, which is estimated to be around 1,800 years old. The grove has several hiking trails, including the Mariposa Grove Trail, which is a 6.5 mile round trip that takes visitors through some of the most impressive trees in the area.

2. The Mariposa Grove is open year-round, but the facilities vary depending on the season. During the summer months, the grove has shuttle service, a gift shop, and a snack stand. Outside of the summer months, the grove is accessible by car or by hiking. The phone number for the Mariposa Grove Visitor Center is (209) 375-9535.

3. Admission to the Mariposa Grove is included in the entrance fee to Yosemite National Park, which is $35 per vehicle or $20 per person for a one-week pass. Private vehicles are not allowed in the grove during the summer months, and visitors must take a shuttle from the Yosemite Valley to the grove. The shuttle is free and runs every 10-20 minutes, depending on the time of day. During the winter months, visitors can access the grove by car, but the road may be closed due to snow.