Google "That Wanaka Tree" and take your pick from a million photos of it
I had my GoogleTV do the ambient mode and it displayed this photo, does anyone know where google gets their pictures from? I like the photo a lot and would like to set it as my desktop background but could find much in the settings.
You can find it in the Google home app by clicking on the icon for your Chromecast.
https://luke.lol/chromecast.php?id=1513167802
I used your screenshot and did a reverse image search.