# World War I caverns in Vodice, Slovenia: what it is and when to go > World War I caverns in Vodice is A system of underground tunnels from the First World War in the hamlet of Vodice near Grgarske Ravne in Slovenia (Kanal). Interests: Nature. The best time to visit is April to October. In June there are 15 h 32 of daylight, and in December, 8 h 28. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/europa/eslovenia/kaverna-i-sv-vojne/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** A system of underground tunnels from the First World War in the hamlet of Vodice near Grgarske Ravne · Nature - **Where:** Slovenia - **Best time:** April to October. - **Nearest airport:** LJU Zgornji Brnik, 68 km as the crow flies - **Coordinates:** 46.01602, 13.63295 ## What it is and where World War I caverns in Vodice is A system of underground tunnels from the First World War in the hamlet of Vodice near Grgarske Ravne in Slovenia (Kanal). It is in [Kanal](https://kokai.app/en/paises/europa/eslovenia/kanal/), where this site lists 24 more places to see, 8.0 km from the centre. Its coordinates are 46.01602, 13.63295; the nearest main airport is Ljubljana Jože Pučnik Airport (LJU, Zgornji Brnik), 68 km as the crow flies. How to get around Slovenia (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/eslovenia/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=46.016023%2C13.632948) - [Directions](https://www.google.com/maps/dir/?api=1&destination=46.016023%2C13.632948) It is one of the [Nature](https://kokai.app/en/paises/europa/eslovenia/naturaleza/) places in Slovenia. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit World War I caverns in Vodice is **April to October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 8 h 50 | | February | Possible | 10 h 07 | | March | Possible | 11 h 37 | | April | Best time | 13 h 19 | | May | Best time | 14 h 45 | | June | Best time | 15 h 32 | | July | Best time | 15 h 13 | | August | Best time | 13 h 58 | | September | Best time | 12 h 18 | | October | Best time | 10 h 39 | | November | Possible | 9 h 11 | | December | Possible | 8 h 28 | In June there are 15 h 32 of daylight, and in December, 8 h 28. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. When to go to Slovenia in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/eslovenia/#cuando-ir). ## Before you go to Slovenia To enter Slovenia there are 5 things to sort out before you leave, starting with “Valid Spanish ID card (DNI) or passport”: they are all, with their deadlines, in [the Slovenia checklist](https://kokai.app/en/paises/europa/eslovenia/#antes-de-salir). Currency: Euro (EUR); plugs: Type C and F · 230 V · 50 Hz (the same plug as in Spain); emergencies: 112 · 113 police. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Mount Kuk](https://kokai.app/en/paises/europa/eslovenia/kuk/): Mountain in Slovenia · 1.7 km - [Sveta Gora](https://kokai.app/en/paises/europa/eslovenia/bazilika-marijinega-vnebovzetja/): Basilica in Nova Gorica, Slovenia · 2.5 km - [Sveta Gora](https://kokai.app/en/paises/europa/eslovenia/sveta-gora/): Nature · Mountains · 2.6 km - [Sabotin](https://kokai.app/en/paises/europa/eslovenia/sabotino-sabotin/): Mountain in Italy and Slovenia · 3.1 km - [Solkan Bridge](https://kokai.app/en/paises/europa/eslovenia/solkan-bridge/): Stone arch railway bridge over Soča near Solkan, Slovenia · 4.4 km Distances are as the crow flies. Everything else is in [the Slovenia guide](https://kokai.app/en/paises/europa/eslovenia/). ## More in Slovenia: Nature - [Triglav](https://kokai.app/en/paises/europa/eslovenia/triglav/): highest mountain in Slovenia - [Gulf of Trieste](https://kokai.app/en/paises/europa/eslovenia/gulf-of-trieste/): bay in Italy, Slovenia, and Croatia - [Postojna Cave](https://kokai.app/en/paises/europa/eslovenia/postojna-cave/): karst cave system in Slovenia - [Škocjan Caves](https://kokai.app/en/paises/europa/eslovenia/skocjan-caves-exit/): cave system in Slovenia - [Triglav National Park](https://kokai.app/en/paises/europa/eslovenia/triglav-national-park/): national park in Slovenia - [Gulf of Piran](https://kokai.app/en/paises/europa/eslovenia/gulf-of-piran/) Every Slovenia place under Nature, each with its season, is on [its page](https://kokai.app/en/paises/europa/eslovenia/naturaleza/). ## Frequently asked questions ### What is World War I caverns in Vodice? It is A system of underground tunnels from the First World War in the hamlet of Vodice near Grgarske Ravne in Slovenia. ### When is the best time to visit World War I caverns in Vodice? April to October. In June there are 15 h 32 of daylight, and in December, 8 h 28. ### How do you get to World War I caverns in Vodice? The nearest main airport is Ljubljana Jože Pučnik Airport (LJU), 68 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=46.016023%2C13.632948) opens the route on the map, and how to get around Slovenia is explained in [its country guide](https://kokai.app/en/paises/europa/eslovenia/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Slovenia map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Mount Kuk](https://kokai.app/en/paises/europa/eslovenia/kuk/), [Sveta Gora](https://kokai.app/en/paises/europa/eslovenia/bazilika-marijinega-vnebovzetja/), [Sveta Gora](https://kokai.app/en/paises/europa/eslovenia/sveta-gora/). The rest is in [the Slovenia guide](https://kokai.app/en/paises/europa/eslovenia/). Data from [OpenStreetMap](https://www.openstreetmap.org/node/4514398467), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q131744350), CC0. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).