Hi Kane.
That's a nice base to build a great tree .
Looking at the photo , you need to cut about 75mm or so . to get below the what looks like drying out top section and seal with a good sealant to stop any further drying out of the base .
Water heavily till you get some shoots ( it may have dried out too much to come back which would a pity as its great piece of stock to work with)
I would not check the roots till it starts shooting.
20161220_083018.jpg
Best of luck with it
Milo
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