The cache is not hidden at the posted coordinates. It is hidden as an offset, the coordinates are in a published WP below. Maybe the start of the Hwy 118 challenge corridor?
31 Days / 31 MULTI Caches
The Challenge: Find a Multi Cache on 31 contiguous days of your calendar (or a month's worth of the year). They do not need to be found consecutively and previous finds do count, you just have to have contiguous group on your calendar (mine is the last 2 days of May, and all of June). Leap day does count.
Here is a challenge checker. It shows what days you still need to find a multi cache.
[borrowed from The Flying Dutchmen]: Did you know that of all active geocaches in the United States (over a million), only about 26,000 (less than 3%) are multi's? Per Project-GC, 2.55% of all U.S. caches are multi's as of the publication date of this challenge cache. From this perspective, even if you have well over 10,000 finds, you may only have ~300 multi finds but not on 300 separate days!
However, of all active geocaches in Germany (over 380,000), over 40,000 are multi's. This is well over 10% of all German caches!
When you log a find, please indicate on how many days you found a multi.