The Rob Roy Glacier is a small hanging glacier in the Southern Alps of New Zealand's South Island. It is located within the Mount Aspiring National Park, 9 kilometres (6 mi) south of Mount Aspiring / Tititea. The glacier covers most of the headwalls encircling the valley, except the eastern side where the bordering peaks are all just below 2,000 metres (6,600 ft). The spring melt causes frequent small avalanches, and seracs breaking off the glacier's terminal face on the northwestern side of the valley. Bigger blocks of ice can tumble and crash all the way to the valley floor.