Takaka

Moa Hunting

Takaka limestone country Whilst on holiday in the Nelson area last week, I went for a look around the limestone plateau of Takaka Hill, not far from the huge natural shaft of Harwood’s Hole. I managed to persuade a couple of friends to come along for the adventure. The area is very rugged, covered with rock outcrops and tangled vegetation. There are many caves (see my earlier blog post from January 2010) and my particular interest was to look for small vertical shafts that might have acted as lethal traps to the moa that once roamed the area. The delights of moa hunting With some careful searching, it did not take long to find some cave entrances. Some of the shafts are very deep and obviously care is needed in this environment to avoid the fate of becoming entombed and fossilised just like the moa that we were hoping to discover. As you can see, some of these caves are very small. With a bit of wiggling and squirming, we were able to push down into them. Moa bones lie scattered at the bottom of a cave Sure enough, a couple of them contained parts of moa skeletons lying at the bottom. In this image you can see a variety of bones, including leg bones and a pelvis. The number of different bones that we saw in this cave indicated that at least three or four moa individuals had been caught there. Moa pelvis  This is a close up of the pelvic bones of a moa Moa bones in narrow fissure At the very bottom of this cave, there were more bones visible, but the fissure was too tight to get close to. We were very satisfied with our discoveries, and happy to leave the bones in place for future rediscovery and study.

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Caves and Moa Bones

Takaka limestone landscape On a recent trip up Takaka Hill near Nelson, I went exploring over the limestone landscape with my daughter Sophie (with permission from the landowner). The area is riddled with sink holes and caves. The most well known is Harwood’s Hole – a huge vertical shaft about 50 metres across and over 180 metres deep. However most of them are much smaller – many only a few metres deep and blocked with debris. Moa Trap – the cave entrance In this second picture you can see a typical example. A small cave entrance half concealed by vegetation. Inside it, a few metres from the surface and half buried in the clay floor Sophie discovered a moa bone . With a bit of digging we eventually uncovered a variety of bones from several individual skeletons. They were jumbled up with blocks of rockfall debris and many of them were covered in a thick layer of white cave deposit (calcite). This showed that they were likely to be pre – ice age (at least 70 thousand years old) as it takes a long time for the bones to become coated in this way. Finding a moa bone There were once atleast 9 species of moa in New Zealand, although only two of them were common on Takaka Hill. The limestone pot holes were a death trap for many that fell in and were unable to escape. The bone that Sophie is holding in the picture is a lower leg bone (metatarsus). If you would like to see the bones, they are now resident in Ngarua Cave. This is a very worthwhile show cave that has beautiful formations as well as other Moa remains found previously. I can definately recommend a visit if you are passing over the hill some time!

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