Arch at Neptune Beach Near Yachats: Rising and Falling of Oregon Coast Landmark

Published 01/18/26 at 6:55 a.m.
By Oregon Coast Beach Connection Staff

(Yachats, Oregon) – Along that somewhat winding stretch of the edge of Lane County, where its northern boundary falls off into the ocean, there's about 15 miles worth of eye-popping beaches and vistas that are the stuff distracted driving is made of. It's more than a surprise a minute between Yachats and Florence – it's one remarkable discovery after another per second. (All photos Oregon Coast Beach Connection)

In many ways, this chunk of the Oregon coast is difficult to ascertain what beach is which. Signage is either not present or indistinct enough it might as well be nonexistent. The area is like one big hidden spot. And it's got layers. It doesn't give up.

Which is why this one little arch kind of typifies the area. You gotta know what you're looking for to find it, and once you do it becomes like an old friend. Sitting at the northern part of Neptune State Scenic Viewpoint (although it's not well marked from the highway), the arch has a kind of cult following. It's not unlike that arch some 20 miles north at Newport that abruptly fell a few years back.

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Cove-like Beach

The Neptune Beach arch is made of sturdier stuff – luckily. That part of Newport is all soft sandstone, but this is basalt. There are signs, however, it's days are numbered. One day this one will break people's hearts, like the arch at northern Newport and the big one at Oceanside back around 2000.

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Unnamed Access - More Views

This one is a rather distinctive arch in that only a bit of it is showing, and that changes from season to season. Neptune Beach's structure goes far deeper down, but no one knows just how far. These basalt slabs can go down as much as hundreds of feet, according to local geologists. The arch itself could only be a few feet higher than its base – or it could be tens of feet.

Either way, sand levels change its look. During summer, when sand levels rise, there's less of it. All that sand piles up around and the arch shrinks. There have even been times when it was barely a rock sticking out of the beach. In winter, sand levels get scoured out and they leave more of it showing. It's then that gravel beds often form just around it (which can mean agates).

This part of Neptune State Scenic Viewpoint is really just a small cove – and a dangerous one if tides are too high. Don't venture down if the breakers make it up to the arch or farther in.

The cove is littered with structures not unlike the arch. You can even spot some smaller blobs sitting next to larger ones, and some of those have similar heights and curves on them. At least a couple were once connected as arches and then gave way eventually.

Just that is happening with Neptune's lone arch. You can see parts of the curve are thinner than the rest. It too is doomed, and people walking on it a lot isn't going to help, though it's arguably more ocean forces that eat at it.

All this stuff here is made of basalt some 36 million years old or so, having spilled out from Cape Perpetua back when it was a volcano. Everything from just south of Heceta Head to northern Yachats comes from that, although different stuff is mixed in with different parts of the basalt. Hence the differing shades of structures in that region. Geology of Cliffs Heceta Head / Yachats

Neptune State Scenic Viewpoint has a northern half and southern half – this is the northern part. The southern section, less than a mile down, includes a cave, a creek and a wider beach. Cave at Neptune, Geology

How long does the arch have to live? It could be a decade or two; could be hundreds of years. In the meantime, over time, other arches are sure to appear eventually.

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