Wentworth Springs Road at one time was the start of the Rubicon Trail on the far west end. The trail is now typically bypassed as most visitors enter the Rubicon at Loon Lake. The small section of trail still has a lot to offer in the way of exciting and extreme rock crawling. The route starts at the Wentworth Springs Campground and is only a little over a mile and a half long. In that short distance drivers will encounter multiple obstacles including huge granite slabs, a large rock garden, the Postpile, and the Lost Sluice. After Lost Sluice the trail then intersects with the Loon Lake entrance. This section of trail should only be attempted by very experienced drivers in modified vehicles equipped to handle difficult to extreme conditions.