That is not true about Lake Toba. They recently discovered Lava in the Super Volcano and it is considered restless. Yellowstone could not hold a candle to what Lake Toba can do the world.
Yellowstone Volcano. Some called it Yellowstone Caldera.
A volcano crater filled with water---CALDERA
Yes, Lake Taupo is a volcano.
Crater Lake is in the caldera of Mount Mazama.
No. Lake Taupo is in the caldera of a highly explosive supervolcano.
No. It is a volcano caldera. The lake is deep and very blue.
No. Crater Lake is in the caldera of Mount Mazama, which is a stratovolcano.
Lake Taupo is a large lake filling the caldera left by the last eruption. It is an explosive volcano system, so there is no particular mountain.
yellow stone park in usa has the worlds most powerful super volcano There was another supervolcano at Lake Toba. It erupted 73,000 years ago and wiped the human race to only 100,000. The most powerful volcano(s) in the history of the Earth is the Siberian traps that erupted 250 million years ago. They were far more powerful than any supervolcano. By they are long extinct.
Yes. There many several lakes that have formed in the calderas of volcanoes. Perhaps the youngest example is Lake Pinatubo in the caldera of the Philippine volcano, Mount Pinatubo, which formed after an eruption in 1991. A rather unusual case is that of Taal Lake, also in the Philippines. Here a lake fills a massive caldera. In that lake the volcano has started to regrow and in turn has a smaller lake in its caldera.
The size of the Caldera in Indonesia is about 30-35×100 km. some say 30 and some say 35 but the Yellow stone caldera is bigger. Yellowstone's is a about 85×45 km. For sizes on all of the biggest go to: http://geology.about.com/library/bl/blbigcalderas.htm
It would have to be a caldera. A caldera is a depression in the ground, so it is logical that one would contain a lake (and some do). A volcanic neck is a pillar or mountain of rock that solidified inside a volcano, and so could not form a lake.