World Geographical Records

The Tethys Sea was an ancient ocean between India and Asia. When India collided with Asia around 50 million years ago, the seabed was pushed up to form the Himalaya mountain range, which is why marine fossils are found at high altitudes there.

Lake Huron has the longest coastline among the world's lakes at approximately 6,157 kilometers (3,827 miles), including its 30,000 islands. While Lake Superior is larger by surface area and volume, Huron's irregular shoreline and numerous islands give it the longest coastline. Lake Baikal is the deepest lake, and Lake Titicaca is the highest navigable lake.

The Nurek Dam is located in Tajikistan on the Vakhsh River and was the tallest dam in the world at 300 meters when completed. It's a key hydroelectric facility in Central Asia. Georgia, Norway, and Nigeria do not have any dam matching the Nurek Dam's height or characteristics.

Stockholm is built on 14 islands where Lake Mälaren flows into the Baltic Sea. The city's archipelago and harbor are part of the Baltic Sea, which connects Sweden to the rest of Northern Europe. The Gulf of Bothnia, North Sea, and Gulf of Finland are all distinct bodies of water from where Stockholm is located.

The Emperor Seamount Chain is an underwater mountain range in the Pacific Ocean, extending from the Hawaiian Islands northwest toward the Kamchatka Peninsula. It was formed by the Hawaiian hotspot over millions of years. It is not in the Indian, Arctic, or Atlantic Oceans.

'The Herring Pond' is a well-known 19th-century slang term for the Atlantic Ocean, often used in the context of crossing from the UK to North America.

Lake Baikal in Russia is the deepest lake in the world, reaching a maximum depth of 1,642 meters (5,387 feet). It contains about 20% of the world's unfrozen freshwater and is also the oldest lake.

The Caspian Sea is the largest lake in the world by surface area (approximately 371,000 km²). It's technically an inland sea but classified as a lake in geography. Lake Superior is the largest freshwater lake, while Lake Baikal is the deepest lake, and Lake Tanganyika is the second deepest.

The Caspian Sea is the largest inland body of water in the world by area, covering about 371,000 square kilometers. While technically a lake by geological definition, it's called a sea due to its size and salinity.

The Nile River is generally considered the longest river in the world at approximately 6,650 kilometers, flowing north through northeastern Africa. Some debate exists about whether the Amazon might be longer, but the Nile is the traditional answer.

Lake Baikal in Russia is the deepest lake in the world, reaching a maximum depth of 1,642 meters. It's also the world's oldest lake and contains about 20% of Earth's unfrozen fresh water.

The Sahara Desert is the largest hot desert in the world, covering about 9.2 million square kilometers in North Africa. If including cold deserts, Antarctica and the Arctic are larger, but Sahara is typically the expected answer.

Mawsynram in Meghalaya, India receives the highest average annual rainfall on Earth at approximately 11,872 mm. While nearby Cherrapunji is often cited, Mawsynram holds the official Guinness World Record. The other locations listed receive significant rainfall but far less than Mawsynram.

The Dead Sea's surface reaches approximately -430 meters below sea level, making it the deepest surface depression on Earth. Lake Assal in Djibouti is second at -157 meters, and the Caspian Sea at -28 meters. Valdés Peninsula is in Argentina and not a deep depression.

National Highway 7 (now NH 44) is the longest National Highway in India, running from Varanasi to Kanyakumari spanning over 2,300 km. The number 7 represents this highway's designation.