00:00A video has gone viral showing a caver dropping a large rock into the deepest section of what's said to be the world's second deepest cave, triggering an unusual test with spectacular results.
00:11The video appears to have been recorded in Verovkina Cave, also known as Verovkina Cave, a cave in Abkhazia.
00:19With a depth of 2,209 meters, 7,247 feet, it's the second deepest known cave on Earth.
00:27The use of second deepest is conditional because just a few kilometers away is also Krubra Cave or Voronya Cave, sometimes spelled Voronja Cave, which is the deepest known cave on Earth.
00:39It's the deepest known abyss in the world, minus 2,224 meters.
00:45These eerie places are located in Verovkina, within the Arabica Massif of the western Caucasus-Gagra mountain range, on the pass between Krepost and Zant Mountains, near the slopes of Mount Krepost.
00:58Its entrance sits at 2,285 meters, 7,497 feet, above sea level.
01:06Some people online have pointed out that in the recording, it took nearly 16 seconds for the rock to hit the bottom.
01:13Applying the equation speed equals distance slash time, the approximate fall was only 157 meters, not the 2,000 plus meters claimed.
01:23However, it's also important to remember that there's a delay between when the rock hits the bottom and when the sound is heard, as sound also takes time to travel.
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