I first went on this hike when I was in my early teens. Been back several times since. It’s a really great area with a reasonable hike-in. The lake is ice cold, which is nice if you’re just finished a hot hike in. There are some areas sort of cleared for camping, that have clearly been used before. You can hike on from Dorothy to another lake further up the trail (Bear Lake if memory serves me). There’s a a rustic open toilet in the bushes, but there’s no privacy. Not news for experienced backpackers, but a shocker if you’re new to it.