Spring Summer Summer Incahuasi_Bolivia Night in Quito interplay of lines Transition from coal to silver sand extraction, Klinikum Aachen_D "church watch" .view from the top of the Anna Noppenberg heap view from the top of the Anna Noppenberg heap , Al… .The unsurpassed beauty of nature ! .at the foot of the Nordstern heap, Alsdorf_D on the top of the stone waste-heap of the former c… view to Merkstein_D Leenhof ,Landgraaf_NL winter-impressions Support Ukraïne , Kerkrade_NL Support Ukraïne , Landgraaf_NL Spring ! 5 Fassade Rütscherstrasse, Aachen_D Studentshouse,Aachen_D Tropical Forest Mindo Comma butterfly on Buddleija Alligator bug Spring ! 4 Spring ! 3 Spring ! 2 Spring ! Hunebed & visitors ,Drenthe_NL