![Aerial view of the maar-type volcanic crater, cater Cerro Colorado in the mountains of the El Pinacate Biosphere Reserve and the great Altar desert in Sonora, Mexico. Heritage of humanity by unesco. Aerial view of the maar-type volcanic crater, cater Cerro Colorado in the mountains of the El Pinacate Biosphere Reserve and the great Altar desert in Sonora, Mexico. Heritage of humanity by unesco.](https://c8.alamy.com/comp/2CCDRRN/aerial-view-of-the-maar-type-volcanic-crater-cater-cerro-colorado-in-the-mountains-of-the-el-pinacate-biosphere-reserve-and-the-great-altar-desert-in-sonora-mexico-heritage-of-humanity-by-unesco-typical-desert-ecosystem-in-arizona-just-a-few-miles-from-the-site-the-volcano-is-the-second-largest-in-an-extensive-chain-of-volcanic-cones-and-craters-this-crater-is-distinguished-from-the-others-by-its-reddish-color-and-its-formation-with-clay-material-photo-by-luis-gutierrez-norte-photo-vista-aerea-del-crter-volcnico-tipo-maar-cater-cerro-colorado-en-la-sierra-de-la-reserva-de-la-bio-2CCDRRN.jpg)
Aerial view of the maar-type volcanic crater, cater Cerro Colorado in the mountains of the El Pinacate Biosphere Reserve and the great Altar desert in Sonora, Mexico. Heritage of humanity by unesco.
![Aerial view of the maar-type volcanic crater, cater Cerro Colorado in the mountains of the El Pinacate Biosphere Reserve and the great Altar desert in Sonora, Mexico. Heritage of humanity by unesco. Aerial view of the maar-type volcanic crater, cater Cerro Colorado in the mountains of the El Pinacate Biosphere Reserve and the great Altar desert in Sonora, Mexico. Heritage of humanity by unesco.](https://c8.alamy.com/comp/2CCDRRC/aerial-view-of-the-maar-type-volcanic-crater-cater-cerro-colorado-in-the-mountains-of-the-el-pinacate-biosphere-reserve-and-the-great-altar-desert-in-sonora-mexico-heritage-of-humanity-by-unesco-typical-desert-ecosystem-in-arizona-just-a-few-miles-from-the-site-the-volcano-is-the-second-largest-in-an-extensive-chain-of-volcanic-cones-and-craters-this-crater-is-distinguished-from-the-others-by-its-reddish-color-and-its-formation-with-clay-material-photo-by-luis-gutierrez-norte-photo-vista-aerea-del-crter-volcnico-tipo-maar-cater-cerro-colorado-en-la-sierra-de-la-reserva-de-la-bio-2CCDRRC.jpg)
Aerial view of the maar-type volcanic crater, cater Cerro Colorado in the mountains of the El Pinacate Biosphere Reserve and the great Altar desert in Sonora, Mexico. Heritage of humanity by unesco.
![Mean annual PM2.5 concentrations (bars; colored by site-type) and mean... | Download Scientific Diagram Mean annual PM2.5 concentrations (bars; colored by site-type) and mean... | Download Scientific Diagram](https://www.researchgate.net/publication/352068552/figure/fig3/AS:1132449300000853@1647008361979/Mean-annual-PM25-concentrations-bars-colored-by-site-type-and-mean-concentrations-by.jpg)
Mean annual PM2.5 concentrations (bars; colored by site-type) and mean... | Download Scientific Diagram
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