Many years ago -in 1987- I had the chance to visit the monastry of St.Anthony of the Desert which is located in the Arabian Desert of Egypt. Approximately in 300 ac he lived there as an eremite around a small fountain which provided the necessary water. This fountain is still inside the monastry walls and every visitor is allowed to drink from it, which I did as well.
Last year when seeing the Isenheimer Altar (in Colmar) by Matthias Grünewald I was all reminded and inspired to do this drawing on paper which I then coloured with watercolours.