Valkenburg by Peter Gutierrez,
Sun going down in Valkenburg, The Netherlands
✯ Through the Arch - Valkenburg, Limburg, The Netherlands
fascinating. Note the charcoal (late 1700s) drawing in a Cave in Valkenburg, Limburg in the Netherlands.
Note the charcoal cartoon in a Cave under Valkenburg castle in Valkenburg, Limburg in the Netherlands.