The Siete Luminarias are low-rimmed volcanoes, or
maars, with steep-sided, flat-bottomed central craters up to one kilometer in diameter. The seven craters are Hoya la Alberca (1672 meters elevation), Hoya de Cíntora (1703 m), Hoya de Flores or Hoya de Alvarez (2100 m), Rincón de Parangueo (2050 m), Hoya de San Nicolás de Parangueo (1820 m), Hoya Blanca (1819 m), and Hoya Solís (1787 m). The volcanoes are part of the
Michoacán–Guanajuato volcanic field. ==Flora and fauna==