Before revision: upalt=Tall, thin geyser erupts as bystanders watch.|Andernach Geyser, (Germany), the world's highest cold-water geyser Cold-water geysers have eruptions similar to those of hot-water geysers , except that -bubbles drive the eruption instead of steam from the proximity to magma.
After revision: upalt=Tall, thin geyser erupts as bystanders watch.|Andernach Geyser, (Germany), the world's highest cold-water geyser Cold-water geysers are geysers that have eruptions whose water spurts are propelled by -bubbles