No way in?

I am at this cave the ripple estate Cliffside Cavern. When I try to get in/investigate it says the door is blocked by a box. I've been running around forever and I can't find a way in I've tried different levels of the mountain I'm on and there is no entrance or way in. How do I get in here? I know I'm supposed to because the map says there are dews in there and whim stars.