Park at the Sentinel Day Use Area. From there ford the Highwood River. The river is about 25m wide and was just about knee deep at the time I placed this cache. Use your best judgment and do not attempt the crossing at times of high water.
Make your way east towards the confluence of Zephyr Creek and the Highwood River. At WP1 you will see a path leading up the hill -- this is where you want to go.
The path is fairly well defined but will be very muddy after any sort of precipitation. It is also quite rough in many places because of the amount of equestrian traffic on this trail. The elevation gain on this hike is quite gentle but you will have to cross Zephyr Creek a couple of times -- don't worry, after getting this far they pose no threat to you.
Continue working your way up Zephyr Creek valley until you reach the stone cairn at WP2. Here you will want to leave the main path and begin to work your way east into the side valley.
The path becomes narrower and less traveled at this point but you shouldn't have any problems finding your way. You will cross this small tributary creek roughly seven times before reaching the cache site.
The pictographs are on the north side of the trail just about 1m above the ground at WP3.
This is an important historical site and must not be disturbed.
This rock art is estimated to have been done 300-400 years ago. There used to be more images at this site but they were destroyed when part of the limestone cliff collapsed in 1976.
The cache itself is located approximately 40-50m away from the rock art about 25m up a rocky slope. If anyone in your party is uncomfortable about climbing the slope, feel free to bring the cache down to them so they can sign in -- just make sure you remember where it was hidden!
Please rehide the cache carefully so it won't be discovered by the other people who come here to view the pictographs.
My one-way distance from parking lot to the cache was 4.7km and involved a net elevation gain of 200m. Your distance may vary depending on where you choose to cross the Highwood.
Update December 17, 2015: As noted in some of the recent logs, the Sentinel Day Use area was completely destroyed by the floods of 2013. I found this cache location using a trail description that was in a book from the 1970s given to me by a coworker named Dan Porter. I am sad to report that Dan passed away on December 12, 2015. Dan was an avid fly fisherman more than a hiker so I don't know if he ever visited the pictographs, but this cache placement would never have happened if he hadn't lent me that book. I hope this cache will live on for many more years as a tribute to him.
