Rellotge de sol a La UAGRAM - Bolívia
Within the article of Adela (Nani) Morello an important source is missing - to explain a detail of Fig. 9!
http://www.ta-dip.de/sonnenuhren/sonnenuhren-aus-nah-und-fern/s-ue-d-a-m-e-r-i-k-a/b-o-l-i-v-i-e-n/from-naniflower-to-hexafolia.html