Costa Rica's Cueva de la Muerte, also known as the 'Cave of Death,' conceals a lethal secret—a stable pool of nearly 100% concentrated carbon dioxide, proving fatal to any creature entering its depths. A recent Instagram video showcased the chilling phenomenon, depicting a person attempting to ignite wood above the cave. Strangely, the flame extinguished as the wood … [Read more...] about Unveiling Costa Rica’s Deadly ‘Cave of Death’