Life down deeper?

The article deals with the common topic of possible life still beneath the surface of Mars, however it states that a new study has theorized that life may be as far underground as 30 feet. It discusses a few of the reasons, the best locations to drill, and the technical hurdles to do so (large). drilling 30 feet down is sometimes difficult on earth, especially into hard rock, let alone lifting all the equipment into space, and then getting it to Mars safely.