Photo 32560331, (c) Larry Halverson, all rights reserved, uploaded by Larry Halverson

Attribution © Larry Halverson all rights reserved Uploaded by larryhalverson Source iNaturalist Canada Associated observations Photos / Sounds 2 photos What Prairie Rattlesnake (Crotalus viridis) Observer larryhalverson Date June 21, 2015 Place Grasslands National Park (Google, OSM) Date Added March 8, 2019 09:16 PM MST Description Large not moving off the warm gravel 6:07 pm 6 IDs Research Grade View Sizes small medium large original Copyright