A "Sugar Bush"
The sugar maples have been tapped by boring a little way into their trunks with an auger, and inserting a spigot. The clear, sweet sap is collected in buckets, and subsequently "boiled down" until it crystallizes to form the familiar and delectable maple sugar of commerce. If the sugar is honestly made, nothing whatever is added to the sap.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 11 Chapter 8