Cathodic protection equipment on Voskresensk–Moscow gas pipeline (Voskresensk is 42.2 km on the left), around an insulating piece. The white thing at left-bottom corner is <a rel="nofollow" class="external text" href="http://%D0%BA%D0%B8%D0%BF%D0%BF%D0%B2%D0%B5%D0%BA.%D1%80%D1%84/kip-pvek-tip2">a test point box</a>.
<a href="//commons.wikimedia.org/wiki/User:Incnis_Mrsi" title="User:Incnis Mrsi">Incnis Mrsi</a>
2015-06-30
<span class="int-own-work" lang="en">Own work</span>