Mogote Bayo Nature Reserve: Merlo's Mountain Escape

Mogote Bayo Nature Reserve protects 330 hectares of tabaquillo forest on the slopes of the Sierras de los Comechingones, just outside Merlo in San Luis Province. It's free to enter — you only need to sign the register at the ranger station — and the gates are open Thursday to Sunday and public holidays from 9:30 AM to 3 PM (last entry), with the reserve closing at 5 PM.

The reserve sits in the Rincón del Este neighborhood, about 3 kilometers from Merlo's center. Most visitors come for the self-guided trails: a 40-minute loop that's flat enough for kids, a one-hour climb to a viewpoint, and the tougher 3-hour Via Crucis route to a metal cross on the ridge. I've hiked all three, and the short loop delivers the best effort-to-reward ratio if you're pressed for time.

Trails and What You'll See

The Short Biodiversity Loop

This 40-minute circuit starts at the ranger station and winds through a patch of native flora labeled with signs — medicinal herbs, aromatic shrubs, and the tabaquillo trees that give the reserve its character. It's the easiest option and the one I'd recommend for families with young children. The path is wide and mostly level, with a few rocky sections that require attention but no scrambling. Interpretive panels explain how the forest fits into the Chaco Serrano ecosystem, and if you're quiet, you might spot a llama grazing near the trail — they're not shy.

The One-Hour Viewpoint Trail

A step up in effort, this trail climbs steadily for about 30 minutes to a natural balcony with views over the valley and Merlo's outskirts. The gradient is moderate, and the surface is a mix of dirt and loose rock. I'd wear shoes with decent tread — sneakers are fine, but flip-flops are a bad idea. The return leg takes another 30 minutes, so budget an hour total. From the top, you can see the patchwork of orchards and pine plantations that surround the town, and on clear days the distant peaks of the Comechingones range.

The Via Crucis to the Metal Cross

This is the reserve's signature hike: a 3.2-kilometer loop with about 200 meters of elevation gain, leading to a 12-meter metal cross that marks the high point. Stations of the cross line the route, and from station 9 onward the trail becomes steeper and rougher, with some exposed sections near ravines. AllTrails rates it moderately challenging, and I agree — it's not technical, but the loose scree underfoot demands care, especially on the descent. The round trip takes 1 hour 15 minutes at a steady pace, though most people spend 2 to 3 hours including stops. The cross itself is a landmark visible from much of Merlo, and the panorama from the base is the best in the reserve.

Practical Details for Your Visit

Getting There Without a Car

If you're relying on public transport, take the El Merlino bus from the old terminal in Merlo toward Rincón. Ask the driver to drop you at the badén (the low-water crossing) just before the Reserva Florofaunística, then walk back about 100 meters to the entrance of Hotel Estilo MB. You'll see a ramp on your left; follow the dirt road for one block to reach the reserve gate. The whole journey from the center takes around 20 minutes. By car, head up Avenida de los Césares and turn left onto Provincial Route 5, then look for the sign for the reserve next to Hotel Rincón del Canadal — the entrance is easy to miss, so keep an eye out.

Opening Hours and Entry

The reserve operates on a limited schedule: Thursday through Sunday and public holidays, 9:30 AM to 3 PM for entry, with the gate closing at 5 PM. Arrive before 3 PM or you'll be turned away. Entry is free, but you must register at the ranger station — this is for your safety, as the rangers keep track of who's on the trails. A voluntary contribution is appreciated but not mandatory. There's no need to book ahead for individual visits; guided groups (often school trips) do arrange ahead, but independent travelers can just show up. Note that hours can change seasonally or due to weather, so check the official tourism site before you go.

What to Bring and Wear

The reserve has no water sources along the trails, so carry at least 1 liter per person — more on hot days. Wear long pants to protect against scratchy vegetation and insects, and bring a hat and sunscreen; the exposed sections get intense sun by midday. The rangers are strict about fires and camping — both are prohibited. Dogs are not allowed, and you should pack out everything you bring in. I'd also recommend trekking poles for the Via Crucis if you have knee issues; the descent is hard on joints.

Best Time to Visit

Spring (September to November) and autumn (March to May) offer the most comfortable hiking weather, with daytime temperatures between 15°C and 25°C and low humidity. Summer (December to February) can hit 30°C by afternoon, so start early if you visit then. Winter (June to August) brings cooler days, often around 10°C to 15°C, and the trails are quieter — but check the schedule, as the reserve sometimes closes on short notice due to snow or high winds. Birdwatchers should aim for October or November, when migratory species pass through and the tabaquillos are flowering. The reserve is home to at least 50 bird species, including raptors that ride the thermals above the ridge.

Frequently Asked Questions

Do I need a reservation to visit Mogote Bayo Nature Reserve?

No reservation is required for individual visitors. You simply sign the register at the ranger station on arrival. The only exception is for organized groups of 10 or more, which should contact the reserve in advance to arrange a guided walk.

How long does it take to hike to the cross and back?

The Via Crucis loop to the metal cross takes about 1 hour 15 minutes at a brisk pace, but most visitors spend 2 to 3 hours including rest stops and photos. The trail is 3.2 kilometers with roughly 200 meters of elevation gain, so allow more time if you're not a regular hiker.

Is the reserve accessible by public transport?

Yes. The El Merlino bus from Merlo's old terminal stops near the reserve entrance — ask the driver for the badén before the Reserva Florofaunística. From there, walk back to the Hotel Estilo MB ramp and follow the dirt road for one block. The ride takes about 20 minutes and costs a few pesos.

Are there facilities or water available inside the reserve?

There are no shops, cafes, or water taps in the reserve. Bring your own water and snacks. The nearest facilities are in Merlo, so plan accordingly. There is a small parking area at the entrance, but it fills up on weekends — another reason to arrive early.