Postcard DE-11803153

I wonder where this spectacular place is located. (There is no attribution on the back of the card.) The reflections in the water seem to draw the viewer's eye deeper into the photo, to the place where the mountains, the clouds, and the low-lying mist seem to meet. Am also intrigued by the plants in the foreground. The red, white, and green rosettes could be decorative cabbages, but I have no idea what the tall yellow "spears" actually are. They certainly look exotic, though.