Frog


① memo 20180526 ~ Frog ~ Ditch around Alphen in the Green Heart in Holland. Using the Ambeo Sennheiser Apogee headset for binaural sound on the iPhone X.

Polder Flushing


① memo 20171112 ~ Polder Flushing ~ Flushing (once in a while) the ditches and larger waterways of the low-lying polders – water management in the Green Heart of Holland , filmed November 2010