Geothermal regions are areas of the Earth where heat from the interior is closer to the surface, often resulting in volcanic activity, hot springs, and geysers. These regions are typically found along tectonic plate boundaries, where the Earth's crust is thinner, allowing heat to escape more easily. Countries like Iceland, New Zealand, and Japan are known for their geothermal activity, utilizing this natural heat for energy production and heating. Geothermal energy is considered a renewable resource, as it relies on the Earth's internal heat, which is continuously replenished.