Hot lava is molten rock that erupts from a volcano during an eruption. It is formed when the Earth's mantle melts due to high temperatures and pressure. When lava flows out of a volcano, it can reach temperatures between 1,300 to 2,200 degrees Fahrenheit (700 to 1,200 degrees Celsius). As it cools, it solidifies into various types of rock, such as basalt or pumice. Lava can take different forms, including pahoehoe, which is smooth and rope-like, and aa, which is rough and jagged. The speed of lava flow can vary, with some moving slowly and others traveling quickly down the slopes of a volcano. Understanding hot lava is essential for predicting volcanic eruptions and ensuring the safety of nearby communities.