We're not going to say too much and spoil your fun. Be alert. When replacing the lock, please be sure to keep it on the code until AFTER you have it in place.
For more highly favorited caches in the Delta, check out this bookmark list: Caching The Delta Favorites
For more of our favorite caches that we have created and placed in California, Nevada, Washington, and Hawaii, check out this bookmark list: JoyfulNomad's Favorite Owned Geocaches
Cache is placed with permission of the property owner.
Many thanks to MCL1080 for help in building the cache container.