EPOD - a service of USRA

10/02/23 Gas Ring Emitted from Mt. Etna

09/12/23 Spiral Pattern in Australian Opal

08/22/23 Sunrise at Zabriskie Point

08/17/23 Double Hoodoo in De-Na-Zin Wilderness

08/07/23 Conchoidal Fracturing in Sandstone

07/18/23 Opal Pseudomorphs

06/23/23 North Teepees

05/30/23 K-Pg Boundary in Oregon

05/17/23 Layers of Etna Eruptions

05/03/23 Aracar Volcano

03/28/23 Tafoni Weathering in West Virginia

02/14/23 Grotta di Serracozzo Lava Tube

01/26/23 Volcanoes of the Northern Oregon Cascade Range

01/18/23 Mushroom Rock State Park

01/09/23 Subterranean Cathedral of Salt in Sicily

01/06/23 Opalized Fossil of a Cycad Cone

01/02/23 Radial Stress Fracture

12/16/22 Red Bar Natural Bridge, Utah

12/09/22 Crystal Forms in Petrified Wood

12/01/22 Mt. Baker at Sunrise

10/17/22 Fossil Find in Sicily, Italy

10/12/22 Arizona’s China Wall

09/28/22 Fossil Lake’s Legacy at Wyoming’s Fossil Butte

09/06/22 Wagon Tracks from the Old West?

09/01/22 First Light on the Circle Cliffs Anticline

08/05/22 Mudcracks: Now and Then

08/03/22 Mantling on Utah’s Hogback Ridge

07/20/22 Dendrite Inclusion in Opal

07/19/22 New Eddystone Rock

07/12/22 Varvite Park in Brazil

07/07/22 Volcanic Tunnels of Reunion Island

07/05/22 The Castles of the Calchaquíes Valleys

07/02/22 Culburra Beach Sand Layers Following Wildfires

06/17/22 Timpa Nature Reserve of Acireale

06/04/22 Archive - Inside Kawah Ijen's Crater

05/28/22 Archive - Colors of Grand Prismatic Spring

05/27/22 Recent Eruption of Piton de la Fournaise

05/21/22 Archive - Levadas of Madeira

05/07/22 Archive - Mount Cervino and Blue Lake

05/04/22 Calymene Fossil in Spain

04/30/22 Archive - Tongariro National Park, New Zealand

04/28/22 Pinwheel Rock in the Mojave Desert

04/23/22 Archive - Great Sand Dunes National Park

04/20/22 Drone Image Over Mount Etna

04/09/22 Archive - Glacial Evidence in Central Park

04/06/22 Muonionalusta Siderite Sample

04/02/22 Archive - Mud Cracks near Trona, California

03/29/22 Rainbow Pyrite

03/26/22 Archive - Naatsis’aan

03/19/22 Archive - Upheaval Dome