The Cobb Valley region is one of the most interesting in the country for trampers and naturalists with its impressive mountain and bush scenery, remarkable botany and geology, and interesting human story. The Cobb area has many special geological features. Nowhere else in New Zealand has such a complex series of ancient rocks been eroded into such distinctively different landscapes. In the Cobb Valley, rivers have cut down into the rising landscape from near Aorere Peak; northwards the Burgoo, eastwards the Waingaro, westwards the Roaring Lion and southwards the Cobb.
With the onset of the ice ages, these valleys filled with glaciers, the largest was the Cobb. It carved a classic U-shaped straight valley, polishing and smoothing bedrock and dumping ridges of moraine as it went. Today's empty valley cuts through a wide range of very old rocks, some volcanic in origin, some metamorphosed through time. These include sandstones, schists, undersea fan deposits, shales and quartzites.
Plan & Prepare
Before you go into the outdoors, tell someone your plans and leave a date to raise the alarm if you haven't returned. To do this, use the New Zealand Outdoors Intentions process on the AdventureSmart website. It is endorsed by New Zealand's search and rescue agencies and provides three simple options to tell someone you trust the details about your trip.