The Cascata da Bernina, a series of smaller waterfalls on the Bernina River (close to the Morteratsch trainstation).
Locomotive ABe 4/4 of the Rhaetian Railway over the Cascata da Bernina.
The mountain in the background is known as Piz Albris (3'166 m).
The stamp was issued in the series
"150 Years Anniversary of the Establishment of Diplomatic Relations between Switzerland and Japan".