Human organism in action.

Kennemer Dunes 360° (detail) 26 March 2017. Catch [ the edge ] 

Min/max temperature: 4°C/12°C; humidity: 55%; precipitation: 0 mm; sea level pressure: 1028.33 hPa; wind: SSE 22.0 km/h; visibility: 10.0 kilometres; Clouds: Few 426 m.

Kennemer Dunes 360° (detail) 24 March 2017. Inside [ outside ]

Min/max temperature: 2°C/12°C; humidity: 69%; precipitation: 0 mm; sea level pressure: 1031 hPa; wind: SE 11.3km/h; visibility: 16.0 kilometres

Bloemendaal aan Zee and Kennemer Dunes 360° (detail) 22 March 2017. Break the chain [ free the mind ]

Min/max temperature: 3°C/12°C; humidity: 63%; precipitation: 0 mm; sea level pressure: 1013 hPa; wind: SSW 9.0 km/h; visibility: 10.0 kilometres; Clouds: Mostly Cloudy 2346 m., Mostly Cloudy 11887 m.

'Map of Southern Africa showing the main features mentioned in the story', from: Laurens van der Post's 'The lost world of the Kalahari' , introduction, first published in 1958 by The Hogarth Press in Great Brittain

Kennemer dunes 360°, detail: IJmuiden Beach, South Pier, 17 March 2017. Look and see [ process and show ]

Min/max temperature: 7°C/14°C; humidity: 98%; precipitation: 1 mm; sea level pressure: 1008 hPa; wind: WNW 43.0 km/h; visibility: 10.0 kilometres; Clouds: few 670 m., overcast: 975 m.

Kennemer Dunes 360°- detail, 15 March 2017. Spring [ birth of a nation ]

Min/max temperature: 4°C/23°C; humidity: 76%; precipitation: 0 mm; sea level pressure: 1031 hPa; wind: WSW 5.0 km/h; visibility: 14.0 kilometres; Clouds: few 2700 m.

"Both extrinsic as intrinsic muscles control the foot. In the calf the m.gastrocnemius and the m. soleus, who form the achilles tendon, the strongest plantar fexor of the ankle. The subtalar joint has a transfer function; it is rather rigid and transfers the power directly to the talus and foot. The m. peroneus longus produces a high degree of downward pressure from the first metatarsal bone and controls the fine movement of the large toe.[…] The m. flexor hallucis longus and m. flexor digitorum control the bending of the toes during movement and are strong. The muscles that slow down the foot when it touches the ground are the m. tibialis anterior and the m. extensor hallucis longus and brevis. This delay prevents the foot to come down with a blow when making heel contact."

Victor H. Frankel, Margraeta Noridn, Chris J. Snijders in 'Basic Biomechanics of the Skeletal System', page 218, 219, first published in 1980 by Lea & Febiger, Philadelphia

Kennemer Dunes, 1 March 2017. Focus on the task [ meditation ]

Min/max temperature: 4°C/7°C; humidity: 99%; precipitation: 1 mm; sea level pressure: 997 hPa; wind West 15.9 km/h; visibility: 10.0 kilometres; Clouds: Few 335 m., Scattered Clouds 762 m., Mostly Cloudy 1188 m