We came back down the Boott Spur Trail the next day, it's a gentler grade but long, long, long. I woke up that night with my feet throbbing. The trails at the top leading to it are very flat for a couple miles, we were grateful for the cairns to guide us through the fog. Eventually we got low enough for views of where we still had to go and back up to where we'd been. Then some nice ones of Tuckerman Ravine where we'd gone up the day before, and Huntington Ravine where the toughest trail in the Whites is located, there are many trails on my list, this one is way down at the bottom, but I'm pretty curious just how bad it is.