>>1314345I hope you kept that in a bag while transporting and storing it. Or at least a Tupperware container/tote while at home. Can't imagine how many bugs are in that thing and what might fall out of it. Had a deer bone I found that turned out to have an ant colony living inside. Didn't notice until I was doing something else related and used it as an incense holder to make the room smell better. Stick the incense stick in a hole in the bone, light it, go away for 30 seconds, come back, and I had a whole ant colony on my table. Luckily, I had permerthin (an amazingly effective bug poison)...
As for processing, burying works fine if you got a few years. Leaving it out somewhere on your property can work if something doesn't take it and only if something further cleans it up. Just DON'T boil or bleach the bone (boiling makes the bone yellow, gross, and "locks in" the grease, which will make it go bad and smell and will also soften the bone; bleach turns the bone white, leaves dusty white patches, and BOTH ruin the bone and affect the structure of the bone). Too yellow? Use Hydrogen Peroxide or dawn+water to degrease it. All stores will sell it for very cheap. Dollar stores sell it for around 1 quart/dollar. It's all ~3% if you don't have a license, which is fine. Sodium hydroxide also sounds like a BAD idea. That's also known as lye. Which, having watched this, I have a feeling your skull is going to just dissolve.
https://www.youtube.com/watch?v=2-eMOCMDQj8 Also, lye+aluminum = hydrogen and intense bubbling. Which makes it an even worse idea. You also need heat, I think, which as said earlier, will also ruin the bone structure.