diff --git a/07_trees/go/01_filesystem_dfs.go b/07_trees/go/01_filesystem_dfs.go
new file mode 100644
index 00000000..3abe5ebe
--- /dev/null
+++ b/07_trees/go/01_filesystem_dfs.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"sort"
+)
+
+func printnames(dir string) {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		log.Print(err)
+		return
+	}
+
+	sort.Slice(entries, func(i, j int) bool {
+		return entries[i].Name() < entries[j].Name()
+	})
+
+	for _, entry := range entries {
+		fullpath := filepath.Join(dir, entry.Name())
+		fileInfo, err := os.Stat(fullpath)
+		if err != nil {
+			log.Print(err)
+			continue
+		}
+
+		if fileInfo.Mode().IsRegular() {
+			fmt.Println(entry.Name())
+		} else if fileInfo.IsDir() {
+			printnames(fullpath)
+		}
+	}
+}
+
+func main() {
+	printnames("pics")
+}