goudron (1) pierre (1) comportement (1) sable (1) matériau (1) chauffage (1) chimie (1) grotte (1) paléoécologie (1) Gibraltar (1) Gibraltar (1) Combustion (1) Chemical warfare (1) Antiquities, Prehistoric (1) Cistaceae (1) Tar (1) Success (1) Stone (1) Shrubs (1) Sand (1) Prophecies (1) Palynology (1) Paleoecology (1) Neanderthals (1) Prehistoric peoples (1) Hypothesis (1) Herbs (1) Heating (1) Guano (1) Geochemistry (1)