Mos Achim is a place located at the margin of the Sannicolau-Mare city, known for the local people as the only railway bridge around the area. The '80 generation know Mos Achim as the best place to take a recreational bath in the middle of nature, as Aranca channel forms a small swimming pool just beneath the bridge. If you go there around local time 19:00 you might catch to see a local train. The experience is unique if you stand under the bridge,on Aranca's shore.
Look for a metal box on the shore, beneath the bridge. The place is rocky, so look under some rocks. Sign the log-book. If you take something from the box, be sure to put something else instead. You might want to go there by bike or just hiking. The terrain is difficult for auto access. Have fun!