About Wonderland Lake
Wonderland Lake has its own place in the Continental Divide / Flattop Area landscape: a hard lake at 11,070 feet. It sits on the west side of the Continental Divide. The name is marked informal in the lake data.
The listed approach is 8.5 miles one-way from Bear Lake TH or North Inlet (off-trail), but this should be treated as a route-finding objective rather than a simple maintained-trail hike. The name is informal, and it is remote west of the Divide. In this area, this divide country is remote, high, and often more about navigation than maintained-trail hiking.
NPS describes Rocky Mountain National Park as spanning more than 415 square miles, and this divide country sits in the kind of interior terrain where mileage, elevation, and navigation all matter.
