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The Rim of the World Drive
Highway 18, San Bernardino Mountains

UPDATE May 2007.
DO TO REPEATED VANDALISM THIS LETTERBOX IS MISSING AND WILL NOT BE REPLACED.
The first Rim of the World Highway was constructed in 1915.  Today it is the primary access to the mountain communities of Crestline, Lake Arrowhead and Running Springs.  This highway offers spectacular vistas of San Bernardino and the Inland Empire as well surrounding mountains and valleys.  You can learn more about the mountain resorts here: http://www.mountaininfo.com/

To visit the Rim of the World Drive Letterbox take the 215 freeway north to the 30 freeway,  "Mountain Resorts".  Exit the 30 at Highway 18, aka Waterman and proceed north towards the mountains.  This letterbox is approximately 11 miles up the hill from the freeway.  As you leave the freeway and proceed up the hill you may notice the large Arrowhead carved into the mountains above the Arrowhead Springs Hotel.  This  local landmark is a natural formation and is the source of many indian folklore tales, see Arrowhead Landmark Letterbox.  Follow the signs up the hill to Lake Arrowhead.  Highway 18 is four lanes until you pass the Crestline turnoff where it becomes only two lanes. Proceed past the Crestline turnoff to Lake Arrowhead.  This letterbox is located in a large turnout area, on the right hand side of the road, one mile past the Crestline turnoff.  You will see many small turn outs but the one you want is marked with a small black and white "Turn Out" sign, this is also the first turnout since the Crestline turnoff that has a Call Box.  Park near the Call Box "18-188".  To the left of the Call Box you will see a low, rock and mortar wall.  The letterbox is located under a flat white rock behind the rock wall and next to the first rock pedestal, closest to the Call Box.  Sit on the wall, enjoy the view and stamp away.  There is no need to walk behind the wall, at over 4000 feet it is a treacherous venture and a long drop down.  This letterbox may not be accessible during winter months due to snow, you must check local weather and road conditions before proceeding up the hill:
For local road conditions click here: http://www.dot.ca.gov/hq/roadinfo/  Lately Hwy 18 has been closed alot due to recent flooding and landslides.
For local weather conditions click here: http://www.mountain-news.com/news/weather/

NOTE: Always take adequate precautions (such as prodding with a stick and/or wearing gloves) before reaching into dark crevasses and holes in the wild. Before you set out read the waiver of responsibility and disclaimer.