What happens if you dig a hole straight down?

If you dig a hole straight down, you would eventually reach the Earth's crust, then the mantle, and further down into the outer and inner core, depending on how deep you dig. However, in reality, it's not feasible to dig such a hole due to extreme heat, pressure, and the geological challenges involved. Additionally, you would encounter various materials and layers, including rock, magma, and potentially gas pockets. Ultimately, you would face insurmountable obstacles before reaching the Earth's center.