Maple sap boiling on open fire in old-fashioned kettle. Sap will become syrup when most of its water content boils away. Maple syrup was first collected and used by aboriginal peoples of North America. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Matulavich, Peter |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Länge: | 10 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |