These truly are an impressive feature in the landscape. The picture doesn’t do the feature justice, but they are an accumulation of hard quartzite boulders. Charles Darwin referred to ‘streams of stones’ when he brought HMS Beagle here. Formed thousands of years ago in the last ice age, the rocks have been shattered by the temperature constantly freezing and defrosting. The rocks are arranged biggest on the top with layers of smaller stones lying beneath. The boulders on the top are silver-grey, the ones beneath are protected from the elements are an orangey/peachy colour. The smallest stone runs are about a metre wide, the largest up to four kilometres long and several hundred metres wide.
