A story at Slashgear says that the remains of a Soviet mission to Mars may have been spotted — on Mars — by enthusiasts poring over old photos taken by a NASA orbiter
. The article points out that the find must be confirmed by further imaging, but matches the seekers' expectations.
From the article: "The community at VK.com/Curiosity_Live crowdsourced a mission to find the Soviet Union’s long-lost Mars 3 spacecraft, with the site’s leader, Vitali Egorov of St. Petersburg, Russia, creating models of what hardware from the spacecraft should look like. With this reference, the community combed through a large image taken five years ago by NASA’s MRO, identifying what is believed to be the craft’s parachute, lander, terminal retrorocket, and heat shield."