Tag Archives: Geomunoreum volcanic crater

Manjanggul Lava Tube

There were about 160 lava tubes on Jeju Island. Manjanggul Lava Tube was the biggest at over seven kilometres in length. It was formed between 1 000 to 3 000 years ago when Geomunoreum volcanic crater erupted. Near Manjanggul, four other lava tube caves were formed, but only Manjanggul was open to the public. Continue reading Manjanggul Lava Tube