You might be wondering...what is a tarn?
Without getting too technical, Google says 'A tarn is a mountain lake or pool, especially one in a cirque. A cirque is a half open steep sided hollow at the head of a valley or on a mountainside, formed by glacial erosion. Tarns are usually smaller than lakes.
The St James Tarn is only a minute's walk from the carpark along Lewis Pass. On a day without wind the reflections really are breath-taking.
A viewing deck provides an outlook across the entire tarn with a mountain backdrop.
Long lichen smothering and dripping from trees created an enchanting area at the end of the tarn.