GC1169 - Mission 9: Tunnel of Light was hidden July 18, 2001 and originally placed by Moun10Bike and (founder of groundspeak) Jeremy Irish. When the cache was placed it contained a prop from the 2001 movie Planet of the Apes. The description in green below was the original cache description:

Project APE's success continues as our movement continues to grow beyond what we ever thought possible. For this mission we are heading back to the Northwest, where we are sure to keep our momentum going. Our confidence as a group is growing, but don't let our past success blind us to the constant threat we face. We still hear and receive daily reports of undercover federal agents stalking our team. Remain diligent and stay alert. Remember, anyone you don't know is a possible enemy to our mission.
Below is our field agent's report for the mission at hand:
"This mission is not going to be an easy one. The hike will not be as scenic as some of the other missions, but you'll be on a great adventure. You'll need to wear a good pair of waterproof boots, or an old pair of sneakers. A flashlight is necessary, even if you go during the day.
This is a creepy, historical and very cool spot. Be ready for a unique hike, but beware because in parts you'll be sitting ducks for the authorities. So move fast and keep a good eye on your back to make sure you're not tailed. Good luck!"
We just got back from our trip to Seattle, where we hiked the 6+ mile round trip through the 2 1/4 mile Tunnel of light, which was at least 40 degrees inside. YES IT WAS COLD... Well worth the hike for such an historic geocache find..
We wanted to commemorate this historic geocaching hide on a local level. So I've planned a simple meet and greet at a park that most locals don't even know exist. This is true Project A.P.E. fashion
Come out and celebrate the 20th anniversary of a historical moment in a game that we all love. I will have a few special gifts for the ones who behold the right raffle ticket... and there will be a Version 2 Moun10Bike Geocoin for everyone to discover (this is a very difficult discovery these days)
We will provide lunch for everyone AND there will be about 12 new geocaches released on the same date.
Please R.S.V.P. so we know how much food to provide
