Found - Boulder Canyon, Avalon Tyro, La Sportiva TarantuLace 38

BOX.

I found your BOX on the road side of the Tyrolean yesterday (Friday) during the rain. Since most people retreated from the rain except for some highliners we ran into, I assumed you weren't coming back that day. So, I have your box. Happy to return to you, perhaps for half of the littering fine (what is it in the canyon? $500?).

Also, my imagination runs wild as to why anyone would bring the box to the tyro with them. Don't you normally leave it in the car? Maybe you took the bus up there with your new shoes and didn't think ahead enough to ditch the box first. Yes, that must be it.

Orrr, maybe it's your practice to keep using the box to protect your shoes as long as possible. But you couldn't use the tyro with an awkward box. Hum, that could be in too...

I'm joking really, but I do have your box. I might use it in the garage or recycle it. But if you really want it...