glacial period

• ice ageEra of massive glaciation
• glacierSlow-moving ice mass
• frozenSolidified by extreme cold
• tundraFrigid treeless biome
• mammothExtinct elephant with curved tusks

permafrost · prehistoric · Pleistocene · snowfall · frigid · ice sheet · woolly · extinction · climate · advance · retreat · moraine · arctic · megafauna · cave · cooling · Neanderthal · boulder