The top image is a mangrove forest in New Caledonia, Glaslyn (Blue lake) in Northern Wales and a cave in the 4 corners region of the United States. 

Seth Dixon‘s insight:

Happy Valentines Day!  I decided to compiles some heart-shaped landforms from a Google search.  Like love, some were artificially manufactured and others were purely natural.  If you don’t want cutesy heart pictures but prefer a sociological critique of Valentines Day, this is for you.   

See on www.google.com