We let them explore... a LOT. And of course they loved it. We let them hike down a hill (a small one) on their own to play around a little creek. My favorite moments from this video are 1) when Troy says I'm too heavy and would break the bridge and 2) when he says "she's gonna cry" in his matter-of-fact tone about Cass :)
Troy handled the steep part well!
And Cass dropped to her bottom to get down safely. I'm glad they both know their limits!