In the heart of British Columbia’s Okanagan Valley, lies a lake like no other. Known as kliluk in nsyilxcen, it is a site of deep spiritual and cultural significance for the Syilx Okanagan people. Throughout winter and into spring, this lake looks like any other body of water, nestled away in the rolling hills with a shallow depth and shimmering surface.  However, as the summer sun grows hotter and its rays beat down on the lake, water evaporates, lowering the surface level over time. As the water level drops, interesting shapes begin to break the surface.

As the summer heat drives on, it becomes clear that these shapes are sections of giant circles, which are normally lying invisible just below the surface. Now, with the hot summer providing no relief or added water, the circles continue to reveal themselves. Colourful pools of water appear at their centre, displaying gorgeous hues of yellow, blue and green. These beautiful ‘spots’ give this magical lake its English name – ‘Spotted Lake’. The lake’s beauty is only half the story though – its history is fascinating as well.

‘Spotted Lake’ has no outflow; no river or creek to drain it, and receives all its water as run-off from the surrounding hills. Each year, as snow melts and flows into the basin, it brings with it minerals and salts, which accumulate year over year, century over century. As the summer sun evaporates the water, the salts become exposed and the spots change in size and colour over a matter of months, creating these beautiful fluctuating hues, based on the mineral composition of each spot.

You can read more here. And a couple of videos: