Sugarloaf Mountain and Urca Hill Natural Monument Sugarloaf Mountain and Urca Hill Natural Monument The Sugarloaf Mountain and Urca Hill Natural Monument () is a natural monument in the city of Rio de Janeiro, Brazil. It protects the Sugarloaf Mountain and the adjoining Morro da Urca, distinctive landmarks of the city. The Sugarloaf Mountain and Urca Hill Natural Monument has an area of . The monument is located in the neighborhood of Urca, near where the first settlement of the city of Rio de Janeiro was made. Attractions include the "Bondinho" cable car ride, inaugurated in 1912, Cláudio Coutinho Track for running or walking, the Morro da
Sugarloaf Mountain (Massachusetts) type locality for the Mt. Toby Conglomerate, can be seen directly across the Connecticut River from Sugarloaf Mountain. About 200 million years ago, as the continent of North America began rifting apart from Africa and Eurasia, a series of erosion and deposition episodes interspersed with basalt lava flows created this layer cake. Faulting and earthquakes tilted the layers; subsequent erosion and glacial activity exposed the tilted "layers" of sandstone, basalt, and erosion-resistant conglomerate visible today. Although not composed of basalt trap rock, Sugarloaf Mountain is a closely associated with the Metacomet Ridge by virtue of its origin via the same