Upvote:11
If you are using the Chrome browser, right click on the image and it will offer "Search Google for image".
If you do that with this photo, it will find:
That third one is the photo you are interested in.
Unfortunately all it says is "Indonesia", and there is no exif data with the image, but at least it gives you a place to start further research.
P.S. If you ever go there, don't count on the double rainbow having waited for you.
Upvote:12
Apparently, it is
Wajag Island, Raja Ampat Islands, Indonesia
Steps to find this bit of information:
Looking at Google Maps, the location seems at least plausible (it appears the entirety of Wajag/Waiag/Wayag (?) Island is a maze of smaller lush islands and rocks in the sea). Possibly, what's shown in the photo is a view from coordinates 0.176352, 130.005673 (as measured on Google Maps) roughly towards WNW, but I find it hard to estimate the actual relative distances in the photo, and there are plenty of such small rocks and hills scattered around the main landmasses of Wajag.