In addition , there are several communities that have developed within ancient craters ( such as Sete Cidades , Furnas or Povoação ) , river-valleys ( such as Ribeira Chã , Pilar da Bretanha ) or coastal deltas ( Mosteiros ) .
There are several communities within ancient craters ( such as Sete Cidades , Furnas or Povoação ) , river valleys ( such as Ribeira Chã , Pilar da Bretanha ) or coastal deltas ( Mosteiros ) .