And they have become successional shrub lands, and these then mix in to a map of all the ecological communities.

The garden floor is covered with fruit and veg and above them, the shrub layer is equally abundant, if not a little unusual.

What looks like moss covering rocks is actually a shrub comprised of thousands of branches, each containing clusters of tiny green leaves at the end and so densely packed together that you could actually stand on top of it.

It's made really of two different sources on the one hand, this woody liana which has in it a series of beta carbolines, harmine, harmaline, mildly hallucinogenic to take the vine alone is rather to have sort of blue hazy smoke drift across your consciousness but it's mixed with the leaves of a shrub in the coffee family called Psychotria viridis.

Closer to the next version of the Grand Challenge, the second one in 2005, we had built a car that could drive competently on most desert tracks at speeds up to about 60 km per hour through dry river beds, through steep inclines and declines, and would be able to avoid obstacles like this little shrub on the right side over here.