Why Cerro Chato Is Off-Limits

The hike I planned for months, and never got to do

I had a list. I always have a list before a trip like this, and near the top of it, underlined twice, was Cerro Chato: the extinct cone next to Arenal Volcano, with a crater lake so still that photos of it look faked. Three to four hours round trip, steep at the end, and a reward — an actual lagoon inside an actual volcano — that felt like the kind of thing you only get to do once. I’d read three blog posts about it, bookmarked two more, and packed accordingly: extra socks for the mud, a dry bag for a phone I was absolutely going to drop in that water.

None of those posts mentioned that the trail had been closed for years.

I found out the way you find out most things here, which is by showing up and asking someone who actually works on the mountain. I was at the Arenal Observatory Lodge, talking to a guide about a completely different trail, and I mentioned Cerro Chato in passing, the way you’d mention tomorrow’s plan. He didn’t correct me so much as wince. “That one’s closed. Has been for years.” I asked how many years. “Since 2018.”

I want to be honest about how that landed. Not devastating — it’s a hike, not a wedding — but genuinely deflating in a way that surprised me. I’d built a specific picture of that day, and it just wasn’t going to happen, and worse, I’d had no way of knowing that until I was standing in front of someone who could tell me. The information I’d planned around was wrong, and it was wrong in a way that a normal amount of pre-trip reading hadn’t caught.

Why it’s actually closed

The short version, which I got from that guide and then had confirmed by two more people over the following days, is unglamorous: erosion and accidents. Cerro Chato’s summit trail is steep, narrow, and often slick — this is a rainforest cone, not a groomed staircase — and years of hiking traffic wore the final approach down to loose, unstable ground. People fell. Some of those falls were serious. Between the safety record and the environmental damage, the trail was shut, and as far as I could tell during my visit in 2026, it still is. Nobody I spoke to treated the closure as recent or temporary. It’s just the current, ordinary state of Cerro Chato, and has been for the better part of a decade.

What frustrated me more than the closure itself was how invisible it had been to me beforehand. This is a real gap between what’s written about this region and what’s actually true on the ground right now, and Cerro Chato isn’t even the only place it shows up — the volcano’s own eruption history gets the same treatment, with plenty of writing that still implies you might catch glowing lava, which hasn’t been possible since 2010. Old, outdated, or lazily recycled content doesn’t announce itself as outdated. It just sits there, ranking, looking exactly as confident as the accurate stuff next to it.

So: if you’re reading this in planning mode, save yourself the version of my morning where I stood at a trailhead recalibrating an entire day. Cerro Chato is closed. It is not a technicality, not a “locals still do it” situation, and not something a private guide can responsibly walk you around — anyone offering to get you up there anyway is offering you a trail with the exact erosion and injury problems that got it shut in the first place, minus any rescue infrastructure if it goes wrong. I’m not going to pretend I know of some quiet unofficial route, and if I did, I wouldn’t publish it. That’s not caution for its own sake; it’s the same reasoning the closure itself is built on.

What I did instead

I’m not going to turn this into a ranked list of substitute hikes — that lives elsewhere on this site, and it deserves more room than a paragraph at the end of a complaint. But I’ll say what actually filled the day, because it’s relevant to the disappointment: I went back to the 1968 lava trail instead, the flatter path across the flow from the eruption that reshaped this whole area, and it turned out to be a better fit for how I actually wanted to spend an afternoon — less climb, more time looking around rather than at my feet.

Later that week I did a slower morning on the Bogarín trail in town, which is a completely different kind of hike and honestly the better sloth odds of the two.

If you want the fuller comparison of what’s still open and worth your time near the park, Arenal Volcano National Park has the detail I didn’t have going in, and the 1968 lava trail guide covers that specific hike properly.

For water rather than lava rock, the La Fortuna waterfall and the broader comparison of waterfalls near La Fortuna are both worth a look, and if wildlife was the real draw for you — which, if I’m honest, it partly was for me — the wildlife-spotting guide is a more useful starting point than a closed crater ever would have been.

I also, on the recommendation of the same guide who broke the news to me, booked a proper guided walk along the park’s base trails a couple of days later. a guided hiking experience along Arenal’s base trails isn’t a replacement for a crater lake, and it doesn’t pretend to be, but it gave me the thing I’d actually wanted from Cerro Chato — a slow morning on a volcano with someone who could explain what I was looking at.

On a different day I paired that with a shorter guided hike across the old lava field with a local naturalist, and between the two I came away with a much clearer sense of the 1968 eruption than the crater hike, closed or not, would ever have given me. If you’d rather spend a full two days getting to know the volcano’s trail network properly, there’s also a two-day guided trails experience covering the 1968 flow worth looking at before you build your itinerary around a hike that no longer exists.

Cerro Chato Closure: Questions I Get Asked

Is Cerro Chato still open in 2026?

No. The trail to the summit crater and lagoon has been closed since 2018, and nothing I saw or heard during my visit suggested that’s changed. Treat any article implying otherwise as outdated.

Why was Cerro Chato closed?

Erosion on the steep final approach, combined with a pattern of accidents and injuries on that same stretch. The closure covers both safety and environmental damage to the trail.

Can a local guide take me up anyway?

No responsible guide will, and you shouldn’t ask one to. The conditions that closed the trail — loose, unstable ground on a steep slope with no rescue infrastructure — haven’t gone away just because someone is willing to walk ahead of you.

Is the crater lagoon still there?

As far as anyone I spoke with knows, yes — the lake itself hasn’t drained or disappeared. It’s the access that’s gone, not the feature.

Will Cerro Chato ever reopen?

Nobody I asked would guess a date, and after years of closure I wouldn’t plan a trip around the possibility. If it reopens, it’ll be under different, likely more managed conditions than the old free-for-all trail.

What’s the closest thing to that hike that’s still open?

The 1968 lava trail and the trails around Arenal Volcano National Park are the nearest equivalents in terrain and setting, though neither ends at a crater lake.

Did old blog posts really get this wrong, or did the trail close recently?

It closed in 2018, so by 2026 the closure is old news, not a recent surprise. The posts describing it as hikeable simply haven’t been updated in years, and there are more of them online than you’d expect.