A makhtesh (Hebrew: מַכְתֵּשׁ (), Hebrew plural: מַכְתְּשִׁים ‎ ([ˌmaχteˈʃim] – Makhteshim) is a geological landform found in the Negev desert of Israel and the Sinai Peninsula of Egypt. A makhtesh has steep walls of resistant rock surrounding a deep closed valley, which is usually drained by a single wadi.

Makhtesh Ramon (Hebrew: מכתש רמון; lit. Ramon Crater/ Makhtesh; Arabic: وادي الرمان; lit. The Ruman Wadi) is a geological feature of Israel 's Negev desert. Located some 85 km south of Beersheba, the landform is the world's largest "erosion cirque" (steephead valley or box canyon). The formation is 40 km long, 2–10 km wide and 500 meters deep.

A makhtesh has steep walls of resistant rock surrounding a deep closed valley. One of five makhteshim in Israel and seven in the world, HaMakhtesh HaGadol is the second largest, and is drained by one river, Nahal Hatira. Makhtesh Gadol was discovered and named before Makhtesh Ramon, which is the largest known

Makhtesh Ramon is a geologists’ paradise with fossils, rock formations and volcanic and magmatic phenomenon dating back as much as 220 million years. The Ramon crater began forming when the ocean that covered the desert began to move north.

2018年9月21日 · A makhtesh is a geological feature found in the Negev Desert in Israel and on the Sinai Peninsula in Egypt. Makhtesh is a Hebrew word that means a mortar due to its resemblance to a grinding mortar. It has the appearance of a crater although it is formed by erosion of soft rocks and minerals.

Each of these valleys is drained by a single narrow river bed. Such a unique closed valley is called makhtesh (plural makhteshim), the Hebrew word for mortar. The term crater describes the rather common feature of a valley at the top of a volcano, but the steep valleys of the Negev are different - they were carved by erosion.

2024年1月3日 · What is Makhtesh Ramon and how was it formed? Makhtesh Ramon is the largest erosion cirque in the world, 40 kilometers long and up to 10 kilometers wide. Many people call it mistakenly “Ramon Crater,” but the truth is that it is not a crater. It was not formed by a meteor that crashed onto Earth and created a huge hole in the ground.

2010年4月7日 · Makhtesh Ramon is the largest of Israel’s bizarre geological formations called makhteshim (literally, “craters”). Thought for many years to be an impact crater, the result of a meteor colliding...

2024年12月29日 · Makhtesh HaGadol is the second largest makhtesh in Israel, and indeed in the world, measuring 14 km x 6 km (8.5 miles x nearly 4 miles) and reaching a depth of 450 m (1475 ft). The requirements for formation of a makhtesh only exist in the Negev and the Sinai peninsula giving rise to less than 10 makhteshim in the whole world!

The Ramon Crater in Israel’s Negev Desert is the world’s largest erosion crater or makhtesh. A landform unique to Israel’s Negev and Egypt’s Sinai deserts’, a makhtesh is a large erosion cirque, created 220 million years ago when oceans covered the area (the word crater is therefore a misleading translation of Hebrew to English.)