@georgetakei The category should have been "torture device!" Have you ever tried walking on gravel? It's not made for walking! 😱
Joking aside, even if the category was "type of passageway," there was virtually no way to think to guess "gravel" or" walkway" (let alone together) with the letters called. However, given the definition of "walkway," "place" was probably the correct category. https://www.merriam-webster.com/dictionary/walkway