Boulder United States

Boulder is a city in Colorado (CO), United States

In geology, a boulder is a rock fragment with size greater than 25.6 centimetres (10.1 in) in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks or stones. The word boulder is short for boulder stone, from Middle English bulderston or Swedish bullersten.

Top sights in Boulder
Twenty Ninth Street 40.017053 / -105.255202
Bookcliff Vineyards 40.062623 / -105.278867
Wonderland Lake Park 40.048528 / -105.290115
Anne U. White Trail 40.059347 / -105.319792
Coors Event Center 40.004832 / -105.260605
Naropa University 40.014168 / -105.267391
Deer Mountain Trail 39.982102 / -105.049636
Boulder Ensemble Theatre Company 40.019311 / -105.261040
J&L Distilling Company 40.025805 / -105.241258
Sawhill Ponds Trailhead 40.039557 / -105.185228
Carnegie Branch Library For Local History 40.020082 / -105.281531
Cure Organic Farm 40.032554 / -105.181077
Wild Woods Brewery 40.016127 / -105.225938
The Spot Bouldering Gym 40.021671 / -105.250599
Cottonwood Farms 40.013061 / -105.178770
Cu Art Museum 40.007273 / -105.269873
East Boulder Community Center 39.992048 / -105.220024
Boulder Philharmonic Orchestra 40.017330 / -105.274829
Art + Soul Gallery 40.019347 / -105.274405
Heritage Center 38.263540 / -104.616954