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Neptune's cave

The karstic environment

In geological terms, the entire western part of the Alghero area plays host to an immense profusion of limestone rocks that are several hundred metres thick.
The sedimentary deposits, which emerged definitively around 70 million years ago, have been subject ever since then to the incessant erosive forces of water and wind, as well as to the effects of waves, salt water and rain. The result is a collection of various cave systems, each different from the next, with concretions of stalactites, stalagmites and columns.

La Grotta di Nettuno (Neptune’s Cave)

The most famous and most visited cave in and around Alghero is Neptune’s Cave, which is one of the most spectacular works that the infiltration of water has succeeded in creating over the course of millions of years.
This imposing, 2500m-long cave dates from the Cretaceous period and contains traces of the geological history of the entire limestone system of Capo Caccia.
The section that can be visited constitutes a small but significant part.
The cave can be reached either by sea (leaving from the port, from Dragunara beach or from our hotel’s jetty) or by land, making your way down the challenging Escala del Cabirol, starting from Capo Caccia’s large square.
The cave follows a tortuous, complex path, with expansive chambers, tunnels, numerous lakes and important concretions of stalactites and stalagmites.

La Grotta Verde (Green Cave)

Another well-known cave is the Grotta Verde or Green Cave. Its mouth is on the eastern side of Capo Caccia, where there is a large, high opening to the sea.
The cavity is funnel-shaped and slopes down until reaching sea level with two internal lakes. The cave continues onward under the surface into large spaces that have never been fully explored.

> The Porto Conte Regional Park

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Accessibility Information

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Along with our partners, we continuously strive to improve the accessibility of our website and the pages for booking rooms and/or purchasing additional products and services related to the stay. We firmly believe it is our collective moral obligation to allow seamless, accessible, and unhindered use, even for those of us with disabilities.

In our ongoing efforts to improve and consistently address accessibility issues, we regularly scan all web pages using accessibility scanners provided by third-party commercial partners to identify and fix any potential accessibility barriers on our site. Despite our efforts to make all our web pages and content fully accessible, some content may not yet have been fully adapted to the strictest accessibility standards. This may be due to not having yet found or implemented the most appropriate technological solution.

Compliance Status

This website and the room booking pages are partially compliant with the technical standard for websites and mobile applications UNI CEI EN 301549, and with the “AA” accessibility level required by the Web Content Accessibility Guidelines (WCAG) 2.1.
In particular, the compliance level of this website is constantly monitored through the tools provided by:
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https://pagespeed.web.dev/

Non-accessible Content

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  • Assistive technology: Assistive technologies may not always correctly announce messages.

Last Updated

This page on accessibility was last updated on June 25, 2025.