Where did Kate go?
Below is a fictitious conversation:
John: How was your trip? Kate: It was great! I got a lot done. John: Fully recovered? Kate: I still have calluses on my feet. John: Really? I wouldn't have thought you'd have done any walking. Kate: No, they're on the top of my feet.
It's been about an hour, so here's a couple hints:
Kate is a real person. Several of her colleagues have mentioned the issue of of calluses on the top of their feet (I selected Kate because she has not; I wanted this puzzle to be somewhat Google-resistant).
Very strong hint:
The conversation above references a past trip. Kate just went on another trip to the same place.