Old Rock Day 7 Jan 2026

Old Rock Day

Today is a day that puts time into perspective. Old Rock Day highlights the vast geological processes that have shaped our world since its earliest eras. In Arches National Park, Utah, United States, Turret Arch—seen through North Window—offers a striking reminder: landscapes can take hundreds of millions of years to assemble. The Entrada Sandstone that forms these arches began as shifting dunes and shallow seas long before erosion carved today"s shapes. Even so, these formations are relatively young. Most rocks on Earth disappear over time because plate tectonics, erosion and volcanism continually recycle the crust. Only the planet"s ancient continental shields preserve truly old material. Canada"s Acasta Gneiss, about 4 billion years old, is the oldest known rock still rooted where it formed.

© Jim Patterson/TANDEM Stills + Motion

palette

Today in History

Whats a distaff?
7 Jan 2024Great Staple Tor, Dartmoor National Park
7 Jan 2025Moeraki Boulders, South Island, New Zealand

More Desktop Wallpapers:

22 Jul 2025Badlands National Park, South Dakota, United States
9 Dec 2023Vermilion Cliffs National Monument, Arizona, USA
One giant leap for mankind
28 Dec 2025Black-and-white ruffed lemur in Madagascar
Shark Awareness Day
Tomb of the Golden Pharaoh
14 Jul 2025Shark Awareness Day
21 Mar 2026International Day of Forests
29 Jan 2025Porto, Portugal
Here we go!
6 Feb 2025Waitangi Day in New Zealand
3 Mar 2024World Wildlife Day
15 Dec 2024Lake Misurina, Dolomites, Italy
An endless stretch of sky
25 Aug 2025Yellowstone National Park, Wyoming, United States
27 Apr 2024Leucistic Annas hummingbird, UCSC Arboretum, California, USA
13 Feb 2026Third Thai-Lao Friendship Bridge connecting Laos and Thailand
27 Sep 2023Via Krupp, Capri, Italy
18 Nov 2025Male hooded merganser, Oregon, United States
8 Apr 2025Paro Tsechu Festival, Bhutan
International Mountain Day
Winter wonderland
7 Mar 2025Plum blossoms, China
12 Aug 2025World Elephant Day
Whats so funny?
21 Oct 2023International Archaeology Day
24 Apr 2024The white trilliums in Ontario, Canada
19 Aug 2025The Three Musketeers Falls at Iguazú Falls, Argentina
Bungle beehives
27 Jan 2025Grand Canyon National Park, Arizona, United States