A crater lake is a lake that forms in a volcanic crater / caldera.
Crater lakes covering active (fumarolic) volcanic vents are sometimes known as volcanic lakes, and the water within them is often acidic, saturated with volcanic gases, and cloudy with a strong greenish color.
‘The lake is the site of a labor-intensive sulfur mining operation, in which sulfur-laden baskets are carried by hand from the crater floor. The work is paid well considering the cost of living in the area, but is very onerous. Workers earn around Rp 50,000 – 75,000 ($5.50-$8.30) per day and once out of the crater, still need to carry their loads of sulfur chunks about three kilometers to the nearby Paltuding Valley to get paid.’
THE delicious blue flames licking the edges of darkness
tiny silhouettes crept closer towards it, the bellowing fumes that occasionally cloaked them out of sight
What I remember: Ijen is a more arduous hike than Bromo of course, stumbling in the darkness down the rocky steps with our gas masks.