What a cool experience with your boys!
This is practically our backyard! It is so cool! The youngest son has something like 20 Flat Top summit hikes in just over a year living year. I'm starting to stretch him. One summer hike we went off trail pretty much straight up. Had a little bit of climbing with exposure that he did great on. A fall would have REALLY hurt but most likely not life threatening.
I compare living in Anchorage to being in Yosemite Valley. There are so many world class trailheads minutes away from our house.
