This cache can help with several challenges. Rhyme Time Challenge, California Multi Cache Challenge, and maybe more.
This is a simple 2 stage multi. GZ should take you to a gate where you will see a black 3-digit hyphenated number with a white background.. Add the three digits together to get a two digit number X. Multiply X by 11 to get Y. Add Y to 136 to get N and subtract Y from 475 to get W.
The final is at N38 03.N and W122 14.W. Check sum for all digits is 50.