Deep cave exploration is a fascinating field of caving (cave science) and geology. There are many deep and unique caves in the world. Here are some examples:
1. **Krasnogorskaya cave (Krasnogorsk region, Russia):** This cave is located in the Baikal region and is one of the deepest caves in the world. The depth is more than 2.2 km.
2. **Raven Cave (Georgia):** Located in Abkhazia, it has a depth of more than 2 km. Researchers have discovered unique underground formations such as gypsum crystals.
3. **Red Cavern Canyon (USA):** This cave in Kentucky is one of the deepest in the world and includes many branches and passages. Its depth is more than 1.5 km.
4. **Kruber-Voronya Cave (Georgia):** This is one of the deepest caves on the planet. The depth of this cave exceeds 2.2 km.
5. **Sarma (Mexico):** This cave is located in the Sierra de El Abra region of Mexico and has a depth of more than 1.5 km.
Studies of deep caves can provide important data on geological processes