Pretty much all hardpack, some boardwalk sections (used to be treacherously slippy in the wet, are mostly OK now). There’s been some effort to add a bit more in the line of berms, pumpy bits, and even a few small jumps, but the emphasis is very much wheels on the ground XC.
Five or six intersecting loops, so you can go 17k, 30k, and so on up to about 50, but some fire road on the longer ones.
And there’s a few off-piste bits springing up now, particularly so with the Enduro that’s being held there end of the month. Keep your eyes open for “unofficial” looking bits.