Filling in a hole in the basement?

http://imgur.com/Farp696 - Image of the hole, cat for scale.

I'm looking for a good way to fill this hole in, without buying 100 bags of concrete mix.
The hole is: 66"x82" and 9.5 +/-" at its deepest.

What is the best way to go about this? Can I fill a base layer of gravel mix, stones and rocks and the rest top off with concrete? The only way into the basement is a tight winding stare case, making the logistics of carrying materials down difficult. The house is a over 100 years old as well, the hole is where the old coal boiler was most likely.

Thanks!