Ayun Stream is a deep ravine between steep stony ridges near the venerable town of Metulla, established at the end of the nineteenth century. The steam begins its journey in the Ayun Valley in Lebanon about seven kilometers north of Metulla. In summer, the waters of the stream are used for agriculture and the stream channel is left with small wellsprings which continue to flow through the summer. In winter, the flow of the stream is at its strongest, and this creates one of the most spectacular hiking routes in the Galilee. The hike takes about an hour and a half and on the way, passes four waterfalls. One of these, the Takhana (Flour Mill) Falls, rumbles down a wide stony cliff for 21 meters. The falls are named for an old flour mill which was built at the foot of the cliff. The most famous of the falls is the Tanur Falls, which flow down into a "chimney" 30 meters high. In autumn, the squills are in bloom along with the tiny crocuses, and in spring the fields are covered with wild flowers in a myriad of colors.
A longer walk around the site begins at the upper parking lot of the reserve, which can be reached from Metulla. The walk takes about an hour and a half and winds down the hillside along the stream. For those taking this route, we recommend that a vehicle wait at the lower parking area. Otherwise, visitors will have to walk back up to the parking lot in Metulla. The shorter route is circular, beginning and ending at the lower parking lot. This parking area is reached from the Rosh Pina-Metulla road (Road 90), between the markings for kilometer 476 and 477. The walk takes about half an hour and includes a visit to the Gafni observation point and the Tanur waterfall.​