This cache is one of several Doctor Who themed series of caches that I will be placing.
The Husbands of River Song, one of my favorite episodes, is the anticipated culmination of the relationship of Doctor Who & River Song which weaved in/out of the series over several regenerations and leaps through time.
Knowing the outcome of their relationship, over various episodes we witness the Doctor (#12) paying for a restaurant to be constructed in view of the Famous Towers of Darillium . . . where he later made reservations for a table on the balcony with a view of the towers. . . to occur four years in the future. "The Singing Towers got their name from the fact that the wind passing through the cave system on Darillium would harmonize with the cave's crystal layer, creating interweaving melodies."
If a show has just let out or students are transitioning between classes, you might have to hold off on your search and/or require you to park further away. Any other time, if wisely used, the hide location should give a bit of cover for your search.
Remember to bring a pen & take care of returning the container to its spot so as to not damage the location.
Congratulations GKMFalcon for being FTF!!