The picture does not do any justice. You just have to see the painting in person.
The first time I saw the Waterfall painting series by Hiroshi Senju was when I visited Sundaram Tagore Gallery in Singapore. It just blew my mind. It was very simplistic but grand on the same time. The size of the painting is gigantic. However, it is very minimalistic in colors. What a beautiful contrast. It is almost a meditative experience to look at it.
The other painting that gives me this similar chill is the Water Lilies by Monet at Museé de l’Orangerie in Paris. It’s probably the size of it. They are equally enormous. Nonetheless, while Monet’s thrives in colors, Senju’s strives for the lack of it.