hourglass time concept. deadline, the end. ending time. sand and flames.

hourglass time concept deadline time sand flames hourglass sandglass timer measurement timekeeping device ancient timekeeping flow interval cooking maritime navigation religious rituals granular substance flow rate symbolic value finite time flowing historical precise symbolism glass sand clock hour concept minute countdown sand-glass antique fire flames ashes apocalypse world climate change global warming infinity travel hot cold embers explosion fantasy surreal abstract heat isolated winding