Redwoods - the best mountain biking in the world?

Rotorua is a city of geothermal activity identifiable from the sulphurous smell in the air.

Whilst there are many tourist sites, the highlight of this area for us was definitely the mountain biking in Redwoods forest. We scheduled an afternoon and a morning here, but loved it so much we added an early morning to make it three trips in three days. The forest has hundreds of graded single-track (narrow) mountain bike trails, so on our first visit we picked up a map and headed off.

True to their understated form, when we arrived at the start of the first intermediate track, the entry looked impossible to ride, but happily after an up hill push the remainder was rideable. Lots of steep tracks with big drop offs really tested Sam's nerve, but the surface was surprisingly good after so much rain.
A couple of favourites were Challenge, an exposed track essentially made up of fast, smooth, bumps and a few banked corners (a little like a BMX track), and Dragons Tail - a mostly downhill track through the forest - again mostly fast, hard-packed, lots of turns and a couple of good sized drop offs.
Alistair scared himself a little trying out Hot X Buns - a long, downhill, advanced track - but managed to make it down in one piece - and by the end of the three days Sam also conquered an advanced run.
So back to the title - we're probably not in a position to be able to award Redwoods this lofty status - but amongst the numerous places we've biked in the UK (incl Affan, Swinley, Aston Hill) and overseas (incl all over NZ and a little in the French Alps), it's our favourite so far...