We have all our buffalo hunters bring their horns and capes home with them as checked baggage. Australia has disease free status with US so no "dip and ship" is required. As compared to Africa, you get your stuff home months and sometimes years earlier and can save hundreds or even thousands in fees.
The basalt comes in both black and red, a geologist told me that the black is lava that flowed under the sea and a chemical reaction caused the color.
The "roos" and wallabies, nothing like following up a buffalo or scrub bull and having a big roo coming busting out of the scrub at your feet, really gets the blood pumping!