The Flaten nature reserve is located in the province of Södermanland, and in the municipality of Stockholm in Stockholm County, Sweden.
<a href="//commons.wikimedia.org/wiki/User:VulpesVulpes42" title="User:VulpesVulpes42">VulpesVulpes42</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>