In a nearby star system to Earth, there lies an... interesting planet. Thirty thousand atmospheres of pressure, "surface" temperature of 5,500 degrees kelvin, an atmosphere made of gaseous sillicates and vapourised iron, it makes Venus look like a paradise. So let's give it an appropriate name, like Hell.
Now, due to Alien Space Magic a portal 5m wide opens on the surface of Earth connecting to the surface of Hell at the present day. What happens to the area around the portal on Earth, and could we send a probe through to Hell that would survive long enough to send back data?