Wierzba ropeferry (Prom linowy w Wierzbie), to Popielno, Masurian lakes, Poland 2014 Wierzba ropeferry near Mikolajki is the only active ferry in the waters of the Masurian lakes. Runs on the Beldany lake and allows shortening the way from Mikolajki to Popielno. Wierzba also boasts a modern yacht port and holiday resort with conference centre run by the Polish Academy of Sciences. Booth is located on the mooring of white fleet vessels.