Sugarloaf Mountain and Urca Hill Natural Monument and to conserve, protect and recover the existing Atlantic Forest ecosystem and landscape. The consultative council is chaired by the Municipal Environmental Secretariat, which administers the monument. The natural monument is part of the Carioca Mosaic, created in 2011. The monument became part of a World Heritage Site declared by UNESCO in 2012. The management plan was published in October 2013. 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,
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