22-26 April 2019 volunteers working 1) on the Trail of Atheras in Ikaria, 2nd part: «Kapsalino Kastro - Agios Dimitrios (Pounta)» and 2) on the trails of Arethousa [check: http://opsikarias.blogspot.com/2019/06/trail-atheras-2nd-part-trails-arethousa.html ]