Category: Tresviso

Eastern Massif, Picos de Europa, Northern Spain

Far Upstream Sump

At the far end of Cueva del Nacimiento is the (Far) Upstream Sump. Dived in the 80’s by Ian Rollands and Rob Parker, and again in 2023 by Martin Groves. Extract from logbook (Chris Jewell) Thursday 5th September 2024 diving on KISS sidewinder with 2ltr O2 + 1 x 12ltr 26% and 1 x 12ltr…
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Cowshead Cavern

Extracts from 2024 log (Rob Middleton, Jack Dewison) Tuesday 3rd September 2024 Assisted to sump by many others (thanks!) Passed Sump 1 with 2x 7L bottles, ditched 1 bottle at far side of Sump 1, carried 1x 7L and 2 bags each to Sump 2.Passed Sump 2 on a single 7L each. Ditched dive kit…
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Tresviso 2024

The 2024 expedition, to Tresviso, will shortly be returning to the UK after a very wet and miserable 2 weeks of weather but some excellent caving. Overview & brief history: The Picos de Europa is a range of mountains 20km inland from the northern coast of Spain, forming the westerly extension of the Cantabrian Mountains.…
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Tresviso 2023

In just under 2 weeks the members of the 2023 expedition, to Tresviso, will be leaving the UK by various means to travel across to Spain.  All being well there will be blog updates from both the top camp and bottom ‘camp’. Overview & brief history: The Picos de Europa is a range of mountains…
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Article on 2022 diving

https://www.scubadivermag.com/underground-adventures-in-spain-cave-projects/

Cueva de la Marniosa

Sunday 28th May 2023 Cueva de la Marniosa – Forgott Aven 1 Return to Marniosa, this time to go straight to the end of Extra Caverns, Forgott Passage. Here there are 2 small avens to climb. Fast progress to chamber just before the passage and things slowed from here. When this part had first been…
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Tresviso 2023 Mini May Trip

Currently sat at the bar (10.30am) at Manchester Airport, after a hectic morning trying to get over to catch a flight to Santander for our low key May Tresviso trip. Initially 6 people down to 3 by the night before. Cancelled train part way down the road, no other trains getting in to Manchester on…
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Tresviso 2022 Diving

Two excellent videos from the diving undertaken by Chris Jewell, on this years’ expedition:

Tresviso 2022 Summary

The Tresviso 2022 expedition just returned from Spain a few weeks back. A very busy and successful trip which left little time for updating the blog (again). The following is a summary and the full report will follow shortly. Overview:The 2022 expedition was to continue with ongoing exploration in Andara (Eastern Massif) of the Picos…
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Tresviso 2022 Expedition Overview

Tresviso 2022  Eastern Massif, Picos de Europa, Northern Spain   1st September 2022– 20th September 2022      Overview & brief history:    The Picos de Europa is a range of mountains 20km inland from the northern coast of Spain, forming a Westerly extension of the Cantabrian Mountains.  It consists of three main areas, the Western, Central and…
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