If you’re driving to Yosemite Valley, choose your route carefully. The popular entrance from Mariposa along California 140, which becomes El Portal Road, was closed last week because of a slide that sent 4,000 tons of rock raining down a ledge and onto the road. The slide occurred about a mile east of the park entrance, burying the road under 15 to 20 feet of rock debris, blocking the 45-mile route into the park’s valley. The road has no estimated reopening date. Info: (209) 372-0200 (then dial 1, then 1) for any updates. Visitors can use California 41/Wawona Road from Oakhurst to the Valley (50 miles) or California120/Big Oak Flat Road from Groveland (about 50 miles).