As a prescription medication, HCG is used mainly to treat fertility issues. HCG is not approved for over-the-counter use, nor has it been proved to work for weight loss. Companies that sell over-the-counter HCG weight-loss products are breaking the law.
The last Supervolcano to erupt was Taupo in New Zealand around 26,000 years ago. Many incorrectly claim the last 'super eruption' was Toba in Sumatra, but this is incorrect. The most devastating in human history was Toba but it was not the last super eruption!
Olympus Mons, the largest volcano on Mars, is so big that it can be seen with many common backyard telescopes. The largest active volcano on Earth is Mauna Loa in Hawaii, which has erupted off and on for the past 700,000 years. But it is about 2,000 square miles in size, a tiny fraction of Tamu Massif.