Show Us Geology On Stamps. Geologic Formations, Etc

United Nations 2024 World Heritage Sites - Jeju Volcanic Island and Lava Tubes
Seongsan Ilchulbone, also called Sunrise Peak, is a 182 meters high tuff cone located on eastern Jeju Island, South Korea. The steep sided cone was formed 6700 years ago by explosive hydrovolcanic eruption upon a shallow seabed.

Indonesia 2023 Tourism - Sawu Island
Kelabba Madja is located on the southern coast of Sawu Island in the Savu Sea Basin, a part of a non-volcanic arc on the southern edge of the Eurasian Plate. Jurassic and Cretaceous sedimentary rock formations in the area feature spectacular erosion landform of canyons and gullies with colorful cliff walls, while columns and pyramids are capped by hard rocks.

CHILE 1979

When this stamp was issued commemorating 50 years of the city of Coyhaique, they wanted to show an image of Cerro Castillo, a mount wich is located near the city


But the designer the stamp mistakenly used an image of Mount Lavaredo (in Italy).
How many guys reviewed this work before printed and none of them noticed ?
This is the real Cerro Castillo :

ECUADOR 1957
Rumichaca Grotto
It is a rock formation through which water filters from the mountain and over the decades a scene has formed with stalactites and stalagmites, among which birds and bats nest.

Australia 2008 Gorgeous Australia
Geikie Gorge is located in the Kimberley region of Western Australia. Fitzroy River carved out this 8 km long, 30 m high gorge from Devonian barrier reef strata. Interaction of water and limestone created variation in the color (beige, orange, brown, gray) of cliff faces.

Jordan 2022 Tourism in the Dead Sea
The Dead Sea (elevation 429 m below sea level) lies in the Jordan Rift Valley, a geologic feature formed by the left lateral-moving transform fault lies along the boundary between the African Plate and the Arabian Plate. The hypersaline lake features salt formations with various forms, including salt mushrooms which stand on their halite or rock salt stems in shallow pools near the shoreline.

Morocco 2025 Rock of Tamga
Cathédrale des Rochers is a prominent peak in the Tamga Nature Reserve in the High Atlas Mountains. The massive limestone outcrop, at 1870 m above sea level with up to 400 m of vertical relief, is surrounded by conglomerate and sandstone formed in shallow oceans. Uplift and erosion of the area began around 80 million years ago as a result of the collision between the African and Eurasian tectonic plates.

Australia 2025 Ancient Lands
Mutawintji National Park features gorges and rugged rock outcrops of the Byngnano Range. The stamp shows a view of Mutawintji Gorge, part of a large braided river system cutting through Devonian sandstone formations deposited at the eastern edge of the Gondwana supercontinent.

New Zealand 2025 Scenic Definitive Issue
Banks Peninsula is located on the east coast of the South Island. It comprises the eroded remnants of two large composite shield volcanoes formed due to intraplate volcanism between ca. 11 and 8 million years ago. The entire peninsula exhibits submergent coastline due to sea level rise and sinking of the land.

Ross Dependency 2024 Mount Erebus Extremophiles
Mount Erebus is the southernmost active volcano on Earth, located on Ross Island in Antarctica. It is the current eruptive center of the Erebus hotspot within the Antarctica tectonic plate. The stratovolcano with composite cone was created by multiple eruptions in the Quaternary period.

Ross Dependency 2012 Definitive Issue
Beardmore Glacier in central Antarctica descends from the South Polar Plateau to Ross Ice Shelf, with ca. 2700 meters of vertical drop. This 200 km long, 40 km wide valley glacier moves at an average speed of ca. 400 meters per year.

Australia 2021 Australian Volcanic Past
Lord Howe Island and its islets form part of a chain of seamounts that extend north for 1000 km. The linear subsea plateau, known as the Lord Howe Rise, is the result of the Indo-Australian tectonic plate moving northward over a stationary hotspot. The island itself comprises 6.4 million-year-old basaltic lava flows that filled a large volcanic caldera.

Colombia 2023 Natural National Parks of Colombia
Cordillera Oriental is one of the three branches of the Colombian Andes. Rock formations were uplifted, faulted, and/or deformed in response to Andean Orogeny started 25 million years ago. The stamp shows Jurassic limestone outcrops at Laguna de Cachalú (elevation 3311 m) in the Guanentá Alto Río Fonce Fauna and Flora Sanctuary.

United States 2025 Appalachian Trail
Mount Katahdin (elevation 1610 m) in Maine is the remnant of a laccolith that formed in the Acadian orogeny, when an island arc collided with eastern North America around 400 million years ago. The granite intrusion was further shaped by glaciation during the Ice Age.

Russia 2025 Krasnoyarsk Pillars National Park
Krasnoyarsk Pillars National Park is located on the northwestern spurs of the Eastern Sayan Mountains. The park is renowned for its unique geological formations, primarily Devonian syenite rock pillars sculpted by weathering over millions of years. These pillars, some reaching heights of 90 meters, are found within a diverse landscape of boreal forests and taiga.