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The Fairy Glen – Caer Seion Hillfort loop from Dwygyfylchi

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The Fairy Glen – Caer Seion Hillfort loop from Dwygyfylchi

Easy

4.0

(1)

hikers

The Fairy Glen – Caer Seion Hillfort loop from Dwygyfylchi

01:47

5.81km

210m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 7, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

Start point

Bus stop

Get Directions

60 m

The Fairy Glen

Highlight • Restaurant

Lovely food, lovely staff and set in a beautiful location for walking.

Tip by

673 m

View of the Coast in Parc Cenedlaethol Eryri

Highlight • Natural

2.53 km

Caer Seion is a large and strong hill fort. Excavations were carried out in 1951 but did not produce any dating evidence. However, it is believed to have been occupied during the Middle to Late Iron Age, about 300 BC to 1st century AD and it seemed likely that the fort was abandoned when the Romans conquered North Wales in 78 AD. The fort had a commanding position overlooking Conwy Bay and estuary and over the ancient trackway that followed the coastal ridge, continuing westwards towards Anglesey. The next nearest strong forts and possibly tribal centres are at Pen-y-dinas on the Great Orme, Pen-y-gaer above Llanbedrycennin and Braich y Dinas above Penmaenmawr.
The fort had two periods of defence. In the first period a single stone wall of 3 to 4m width encircled the whole hill top apart from at the steep north side where no defence was needed. It had one entrance, at the south side, which would have had a timber gate. The greater width of the wall around the gate suggests it had a ‘fighting tower’ over it. Within the fort were over 50 timber round houses, many just behind the rampart at the south side (to shelter from the wind) and they are visible as circular platforms terraced into the hill slope. They varied in size from about 4m to 8m diameter and traces of walling survive at some of them. In one place there is a possible corn-drying kiln.

Tip by

2.78 km

View of Deganwy and Y Gogarth from the summit of Caer Seion

Highlight • Viewpoint

The view over the region is wonderful.

Translated by Google •

Tip by

2.86 km

View of Conwy and the Coast from Mynydd y Dref (Conwy Mountain)

Highlight • Viewpoint

2.99 km

Sinadon

Highlight • Summit

Ancient Hillfort: It is the well-preserved remains of an Iron Age fortified settlement.
Location: It sits atop Conwy Mountain, overlooking the town of Conwy, the Conwy Estuary, and the Irish Sea.
Time Period: The fort was likely occupied from at least the middle of the Iron Age, possibly between c. 300 BC and 78 AD, before the full Roman arrival in the area.

Tip by

3.06 km

Caer Seion Hillfort (Conwy Mountain)

Highlight • Historical Site

Very doable mountain top with a nice view over the sea.

Tip by

4.56 km

Scenic View of Parc Cenedlaethol Eryri

Highlight • Natural Monument

5.81 km

End point

Bus stop

Way Types & Surfaces

Way Types

2.19 km

1.82 km

1.07 km

734 m

Surfaces

3.99 km

871 m

754 m

194 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (230 m)

Lowest point (50 m)

Weather

Friday 10 July

26°C

16°C

0 %

Additional weather tips

Max wind speed: 16.0 km/h

to get more detailed weather forecasts along your route

Comments

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The Fairy Glen – Caer Seion Hillfort loop from Dwygyfylchi

The Fairy Glen

View of the Coast in Parc Cenedlaethol Eryri

Caer Seion Hillfort

View of Deganwy and Y Gogarth from the summit of Caer Seion

View of Conwy and the Coast from Mynydd y Dref (Conwy Mountain)

Sinadon

Caer Seion Hillfort (Conwy Mountain)

Scenic View of Parc Cenedlaethol Eryri

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