The World’s Deepest Underwater Cave Is More Than 1,300 Feet Deep
Phillip LehmanTo contact his quest “dangerous” would be a gross understatement. All diving is risky, but submersion in cramped, pitch-black spaces severely compounds those risks. A flooded flashlight, a broken face mask, a ruptured air hose connection, or blinding clouds of kicked-up sediment can have grave consequences. With its origins and actual use unknown until now, the old astronomical document includes both bright and faint stars visible to the naked…Read More