While camping at Cobblerest Campground, we explored Forest Road 041.  The road begins less than a mile below Cobblerest on the Mirror Lake Highway.  The road begins in good, graded condition.  As we climbed higher in altitude, the road became more rough.  A few spots on the road were essentially large boulder fields.  High-clearance 4wd vehicles required.  We eventually made it to Trial Lake, where we hooked on to the Mirror Lake Highway and looped back to Cobblerest.