The Mk45 2006 and Mk45 2001 at Széchenyi-hegy during the Narrow-gauge Railway Day

The Narrow-gauge Railway Days (Kisvasúti Napok) is a series of events held every year on different dates on every public narrow gauge railway in Hungary. In 2011. it means 21 different events from spring to autumn where railfans have the opportunity of photographing locomotives that are normally not used, trains of extreme lengths and visit sidings, branch lines and parts of the railway networks that are not or rarely used on other days.