Hi OlJarhead/Erik
Sadly this is a
common problem, here
is my example. Basically even in the semi sealed meat drawer of your kitchen fridge the humidity is way too low and the cheese has started to dry. The problem is that the outside of the cheese dries and wants to shrink but the inside is still much moister so the outside goes into stress and eventually cracks, normally with big fissures like your pictures as cheeses have little tensile strength.
If you Search on "Crack" you'll find several discussions. The short term solution is to minimize further dehydration and enable the moisture content of the cheese to re-equalize between surface and middle. Suggest placing cheese on a mat on a plate in fridge and placing a bowl over top to seal the humidity in.
I would not wax it until you have largely healed the crack. You could eat it but flavour will be very very mild.
Longer term for humidity control, there are many ideas tricks and traps in the STANDARD METHODS - Aging Cheese and EQUIPMENT - Aging Cheese, Caves Boards. For aged cheeses temp and humidity are the biggest initial problems.