 What I'm interested in is Māori horticulture, or more specifically the adaptation of Māori horticulture to New Zealand from Polynesia. Because you've got to understand that we're dealing with a tropical horticultural system that's developed in the tropics, uses tropical plants, and then it's brought to New Zealand into a completely different environment where people have to find a whole new way of growing these plants and using them for subsistence. More specifically what I'm interested in is the area of the Waikato, because the Waikato is inland. It's a different kind of environment, it's not like the coast where it's relatively frost-free, and also in the Waikato we have these really quite distinct archaeological sites related to the horticulture. It's really intriguing to sort of think about how much of a change it is from bringing growing these crops in really small island environments and bringing it to New Zealand. And one of the techniques that they seem to have used, and it's mostly, you see it mostly in the Waikato, but you do see it in a few other places in New Zealand, is this whole technique of using the adding sand and gravel of various sorts to the soil. And we really don't understand very much about it, what we do know obviously is the amount of labour that went into it. As we do more work it just gets more and more complicated, and we start to find out more and more, there are more and more unusual things that pop up, and you go, what does this mean, and it takes you some time. It may be two or three investigations on different sites, and eventually you'll find enough information, you can start to piece it together, and it gives you an idea or a direction you can start to look.