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Hot Spring Snorkeling & Lava Caving

Iceland underwater and underground

Hot Spring Snorkeling & Lava Caving

If you are curious to see the effects of Mother Nature's power, this is the tour for you. Prepare to spend a day immersed in the volcanic landscape of the Reykjanes Peninsula and to take in the sights that will make you feel like you are on another planet. We give you the chance to swim in a geothermal lake and enjoy its rare environment, after which you will explore a 2000-year-old lava tube. Not bad for a day out in nature!

Kleifarvatn lake offers a unique opportunity to swim in an actual hot spring. You will be sorrounded by the geothermal bubbles that shoot up from the lake bed, while enjoying the colorful sulfur swirls that animate the bottom of the lake.
Our Hot Spring Snorkeling Tour is like no other. Your expert guide will give you a detailed briefing of the activity and will help you gear up in the top-quality equipment provided. You will be fully dressed and sheltered from the cold by a dry suit and a thick, fleecy undergarment, as well as your own base layer.
The geothermal snorkeling tour takes about 40 minutes, after which you will be offered hot chocolate and cookies to warm up.

The second part of this day takes place around the town of Hafnarfjörður, where we find the fascinating Leiðarendi lava tube. This extensive system of caves was formed more than 2000 years ago by the cooled down lava that flowed from the Sulfur Mountain volcanic system.
We will gear up in helmets and headlamps and then start descending into the lava tunnel from the opening in the middle of a lava field. Once down in the tunnel, our lamps will shed light on a mesmerizing scenery made of bright colors ranging from yellow to red and even purple. For about one hour we will move along the tube and observe the beautiful rock formations, stalactites and stalagmites that populate the cave.
This tour is suitable for everyone, but please keep in mind that there are parts of the cave where the ceiling is very low or the floor is unstable and we will have to bend down, squat or even crawl through. We highly recommend you wear sturdy hiking shoes.

Tour Details

  • Available on request from April 1st to September 30th

  • 6 hours

  • 8 snorkelers per snorkeling guide

  • 8 cavers per caving guide

  • Contact us to book for your group

From ISK 19.500

Please bring:

  • Long underwear
  • Thick socks
  • Suitable clothes for the weather of the day
  • Contact lenses if you wear glasses
  • Sturdy hiking shoes

Included

  • Guided snorkelling tour
  • All necessary snorkelling equipment
  • Guided caving tour
  • All necessary caving equipment
  • Light snacks after both tours

Safety requirements

All participants must:
  • have read, signed, and followed directions on the online Snorkeling Medical Statement (link provided in confirmation email) PDF

  • have our Snorkeling Medical form signed off by a doctor if they are age 60 or older PDF

  • sign our liability release form at the start of the snorkeling tour PDF

  • be at minimum 150cm / maximum 200cm

  • be at minimum 45kg / maximum 120kg

  • fit within our dry suit size chart PDF

  • be at least 12 years of age

  • be comfortable in water and be able to swim

  • be physically fit

  • be ready to wear a sometimes tight and constricting dry suit

  • be able to communicate in English

  • not be pregnant

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Guides on this tour

You might be guided by one of these nice guys

You'll visit this area

Kleifarvatn lake

Leidarenði cave

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Our frequently asked questions

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