21K views · 959 reactions | Grand Canyon has a habit of filling people with questions, and our Rangers are here to provide answers! We'll be focusing on geology today, talking about riveting rocks, fascinating fossils, and of course, how this big ol' hole got here in the first place! So fee free to join in, and ask your most burning questions! - BM [Video Description: Two Park Rangers standing in front of a magnificent vista overlooking Grand Canyon] | Grand Canyon National Park | Facebook