They didn't prepare. The Lake Toba eruption was 74,000 years ago, before the development of civilization. The people around at the time were hunter-gatherers. They didn't know what a volcano was or how to prepare for an eruption.
Taal Lake in the Philippines is a freshwater lake that was formed from a volcanic eruption thousands of years ago. The volcano that created the lake is still active and is located on an island within the lake itself.
Ice volcanoes on Lake Superior typically form during the winter months when ice accumulates on the shoreline. They are not true volcanoes as they do not emit lava or molten rock. The last eruption of ice volcanoes on Lake Superior likely occurred during the winter season when conditions were favorable for their formation.
About 9000 years ago - The Barrier is the major unstable formation from that eruption, behind which Garibaldi Lake was created
The last known limnic eruption occurred in 1986 at Lake Nyos in Cameroon. This rare phenomenon happens when a large amount of carbon dioxide is suddenly released from deep lake waters, posing a serious threat to nearby communities.
After the eruption in 1991, a crater lake formed within the caldera of Mount Pinatubo as rainwater filled the depression left by the eruption. The lake, known as Lake Pinatubo, continues to be replenished by rainwater, making it one of the most visible changes to the landscape following the eruption.
Crater Lake in Oregon was formed approximately 7,700 years ago following the collapse of Mount Mazama during a massive volcanic eruption. The volcanic caldera left behind was gradually filled with rain and snowmelt, forming the stunning lake we see today.
Lake Pupuke
Crater Lake in Oregon, USA
Lake Taupo.
Taal Lake in the Philippines is a freshwater lake that was formed from a volcanic eruption thousands of years ago. The volcano that created the lake is still active and is located on an island within the lake itself.
The eruption of Mount Mazama that formed Crater Lake was a caldera forming eruption. This is the most violent type of volcanic eruption.
Lake Taupo fills the caldera of what is one of the world's great volcanoes. The last major eruption was about AD 200, and is recorded in historic accounts from China, and Roman times. Before this eruption, it used to drain out into the Firth of Thames, but that outlet was blocked by the debris from the eruption.
Between 6,000 and 7,000 years ago Mount Mazama collapsed during a cataclysmic eruption, forming a caldera. Rainwater filled this caldera, forming Crater Lake.
An volcanic eruption can sometimes be so powerful, the volcano collapses onto itself and forms a wide crater. Eventually rain will fill that creator, forming a volcanic lake. An example of this is crater lake.
It formed when Mount Mazama collapsed during a massive eruption, forming a crater-like structure called a caldera.
August 21, 1986
Lake Taupo is the largest lake in New Zealand spanning about 622 km²; this is about the size of Singapore. Lake Taupo was formed by a series of eruptions. The main Taupo eruption occurred in 181AD. The most documented eruption in the Lake Taupo area is known as the Oranui eruption. The Oranui eruption caused some distinct changes in the landscape of the Taupo area. The most obvious of these changes being the distribution of lakes in the area, and the course of the Waikato River. Prior to the Oranui eruption a lake existed in a different form, this lake is referred to as Lake Huka, and the Waikato River is documented to have run out to the Pacific Ocean via the Hauraki Gulf basin. After the Oranui eruption the landscape was changed significantly, after a period of flooding, the form of the modern Lake Taupo started to take shape. Over the years after the Oruanui eruption the course of the Waikato River changed to follow it's current route along the Hamilton basin and out into the Tasman Sea.