Cycling in Madrid shared-use paths. The most important shared-use path is Madrid Río, a park located in the banks of the Manzanares River and opened in 2011. Car-shared lanes and streets (in Spanish: ciclocalle o ciclovía) are very frecuent in Madrid. They are marked with the drawing of a bicycle on the pavement, and they are speed limited to 30 km/h. In Madrid, there are many bike sidewalk paths (in Spanish: acera-bici). Some are located in O'Donnell Street or Serrano Street. Greenways (in Spanish: pista-bici) are independent cycle routes, for example the Royal Route GR-124. BiciMAD is a public service of bicycle-sharing. It
1811–12 New Madrid earthquakes 1811–12 New Madrid earthquakes The 1811–12 New Madrid earthquakes were an intense intraplate earthquake series beginning with an initial earthquake of moment magnitude 7.5–7.9 on December 16, 1811, followed by a moment magnitude 7.4 aftershock on the same day. They remain the most powerful earthquakes to hit the contiguous United States east of the Rocky Mountains in recorded history. They, as well as the seismic zone of their occurrence, were named for the Mississippi River town of New Madrid, then part of the Louisiana Territory, now within the US state of Missouri. There are estimates that these stable continental region