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RT @USGS: Happy Birthday to El Malpais National Monument, NM. (12/31/1987) https://t.co/3IT0JoHofx https://t.co/qhhQK5X1gQ
RT @USGS: Happy Birthday to El Malpais National Monument, NM. (12/31/1987) https://t.co/3IT0JoHofx https://t.co/qhhQK5X1gQ
RT @USGS: Happy Birthday to El Malpais National Monument, NM. (12/31/1987) https://t.co/3IT0JoHofx https://t.co/qhhQK5X1gQ
RT @USGS: Happy Birthday to El Malpais National Monument, NM. (12/31/1987) https://t.co/3IT0JoHofx https://t.co/qhhQK5X1gQ
RT @USGS: Happy Birthday to El Malpais National Monument, NM. (12/31/1987) https://t.co/3IT0JoHofx https://t.co/qhhQK5X1gQ