A sinkhole of unknown extent occurs in the Colossal Cave Mtn. Park near Vail, Arizona. A new report by AZGS' Joe Cook uses geophysical and drone technologies to decipher the extent of La Posta Quemada Wash sinkhole. 22-p. report and 4 appendices online at: http://repository.azgs.az.gov/uri_gin/azgs/dlio/1893
Photographer: Joseph Cook
Photo Location Accuracy: Approximately Located
Photo Tags: Colossal Cave Mountain Park, Vail, Pima County, geologic hazard, sinkhole, Limestone, Holocene, Escabrosa Formation 
