Starling murmuration over the ruins of Brightons West Pier, England Jan 8, 2026

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.

© Philip Reeve/Photodisc/Getty Images

palette

Today in History

Where we go to play
Jan 8, 2024Bernina Pass, Graubunden, Switzerland
Jan 8, 2025Great Wall of China

More Desktop Wallpapers:

What is this grand structure?
Nov 19, 2025Hungarian Parliament Building, Budapest, Hungary
Aug 13, 2025Corona Arch near Moab, Utah, United States
Jul 18, 2024Coral Reef Awareness Week
Dec 4, 2023Masai Mara National Reserve, Kenya
May 8, 2024Marseille welcomes to Olympic torch
Apr 3, 2024Munnar, Kerala
The ‘eighth wonder’?
Feb 4, 2025Golden Bridge, Bà Nà Hills, Da Nang, Vietnam
Dec 8, 2023La Rocque Harbour, Island of Jersey
Nov 22, 2025Leshan Giant Buddha, Sichuan, China
Aug 19, 2024Raksha Bandhan
Switzerland of India
Feb 4, 2024Devetashka Cave, Devetaki, Bulgaria
Feb 4, 2026Red kite in snow
Where are these magnificent cliffs?
The epitome of luxury
Mar 8, 2026Akbars tomb, Agra, Uttar Pradesh
The other great barrier reef
Straight out of a fairytale
Jan 27, 2025Zoroaster Temple, Grand Canyon National Park, Arizona, United States
A scented sea of purple
Jan 14, 2026Fortress of Palamidi, Nafplio, Greece
An apex predator
Purple mountain majesties
Bungle beehives
Say hello to these halophytes!
Dec 21, 2025Winter solstice
Nov 14, 2025Happy Childrens Day
Oct 4, 2023World Space Week