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Splitting the arboretum was this massive pedestrian concrete marching area / speed skating course. The really strange thing about it is that roof is on wheels, and theres a few pieces of it that can slide along to different positions. Why though? Why not just erect a permanent roof?

Camera Details: SONY, ILCE-7M2
Settings: 1/250 at f/8, ISO 100, 28 mm
Date: 06 April 2019 Time: 10:19:10