Frequently Asked Questions about Our Lakefront Yosemite Hotel View Menu All Amenities Bass Lake Dining General Glacier Point Lodging Mariposa Grove of Giant Sequoias Yosemite National Park Is Mariposa Grove open year round? Yes, however, the two-mile Mariposa Grove Road is closed from approximately December through March. During this time, you will have to visit the area on foot or by skiing. Looking for something else? Contact our concierge and ask directly.