Olphaert den Otter. World Stress Painting, Air Fire Earth, 2014, tempera on paper, 18 X 26 cm

Olphaert den Otter. World Stress Painting, Water Earth, 2014, tempera on paper, 18 X 26 cm

Olphaert den Otter. World Stress Painting, Earth, 2014, tempera on paper, 18 X 26 cm

Olphaert den Otter. World Stress Painting, Fire Earth, 2014, tempera on paper, 18 X 26 cm

Olphaert den Otter. World Stress Painting, Earth, 2013, tempera on paper, 18 X 26 cm

Olphaert den Otter. World Stress Painting, Air, 2009, tempera on paper, 18 X 26 cm