Wild plums, native to North America, naturalized in the central valley of Chile.  Small, but tasty.  In context at <a rel="nofollow" class="external text" href="http://www.dixpix.ca/sth_cordillera/flora/rose/index.html">www.dixpix.ca/sth_cordillera/flora/rose/index.html</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/92252798@N07">Dick Culbert</a> from Gibsons, B.C., Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/92252798@N07/16236067093/">Prunus americanus</a>