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Hiking trails & Routes

Arratia-Nervion

Baltzola Caves – Abaro Tunnel loop from Axlor

Hiking trails & Routes

Arratia-Nervion

Baltzola Caves – Abaro Tunnel loop from Axlor

Moderate

4.5

(8)

59

hikers

Baltzola Caves – Abaro Tunnel loop from Axlor

02:23

7.19km

300m

Hiking

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required. The starting point of the route is accessible with public transport.

Last updated: April 29, 2026

Waypoints

A

Start point

Bus stop

Get Directions

1

910 m

Puente de los Gentiles

Highlight • Natural Monument

The Bridge of the Gentiles is a natural arch but legends say that it was built by gigantic mythological beings called Gentiles.

Translated by Google •

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2

1.02 km

Baltzola Caves

Highlight • Cave

Impressive cavity, until a while ago you could go through. They have recently put up a sign, warning of the danger of contracting Q fever, and the passage is prohibited.

Translated by Google •

Tip by

3

1.64 km

Abaro Tunnel

Highlight • Cave

Like the Baltzola caves, it is now prohibited to cross them, due to the danger of Q fever.

Translated by Google •

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4

1.66 km

Kobegane (455 m)

Highlight • Summit

5

2.62 km

Ermita de San Lorenzo

Highlight • Religious Site

Pretty hermitage, in the vicinity of the Baltzola neighborhood.

Translated by Google •

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6

4.79 km

Garaio (574 m)

Highlight • Summit

7

4.81 km

Garaio Summit

Highlight • Summit

The access is quite steep and with loose stones. We must be careful.

Translated by Google •

Tip by

B

7.19 km

End point

Bus stop

Way Types & Surfaces

Way Types

3.93 km

1.15 km

842 m

831 m

438 m

Surfaces

4.12 km

1.15 km

1.07 km

496 m

361 m

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Elevation

Elevation

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

Highest point (520 m)

Lowest point (270 m)

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Weather

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Friday 22 May

29°C

16°C

-- %

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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