Blog

2019 Summary

A distinct lack of enthusiasm from people for writing up the expedition….. A post trip summary follows: The Tresviso expedition returned back to the UK last week and the following is a brief summary: Cueva del Nacimiento – Parting Friends In the entrance series of Nacimiento is an area called the Road to Wigan Pier…
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Through-trip!

Cueva de la Marniosa In the early 1970’s a group of students from Lancaster University Speleological Society (LUSS) touring Northern Spain heard about some caves near Tresviso, Eastern Picos de Europa.  In 1975, their first year visiting caves of Tresviso, they explored upstream, into the Sobra valley and found a crack in the side of…
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The times they are a changin’

by Howard Jones Brief history In the 1970’s LUSS were caving in Northern Spain, inland from Santander. They learned about a village where cheese was made and matured in caves. Nearby a resurgence cave fed a hydroelectricity scheme. Add in some high mountains in the vicinity and it was Xmas for cave explorers. Tresviso was…
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Tresviso 2019

The 2019 expedition is only 5 weeks away. Hopefully some interesting blog posts will be created, but firstly, as per previous years, a bit of a brief overview of expedition: Overview & brief history: The Picos de Europa is a range of mountains 20km inland from the northern coast of Spain, forming a westerly extension…
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T20A Silvestre Pot exploration log

Extract from various sources on exploration of Silvestre Pot (Alistair Gott) Part 1 Sobra valley is part of the stream catchment for cueva del marniosa, very little was known about the stream sinks until 5 days ago. Cueva del marniosa is one of the two well known stream caves in the Tresviso region. Imo furlong,…
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Silvestre Pot (Sobra Valley)

An early start was arranged, which would normally mean an early night. 2am was the actual bedtime for most on the trip. The agreed start time of 9am was fairly well stuck to and saw us at the cave by 9.45am. Upon arrival at the track, AG decided to put his caving kit on and…
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Practice Pot (IM2) Cueva Donga (AS 1) & de Silvestre (KJ1)   

By Stu Coxon  We left the hostel with the intention and kit to look at the tight section in Cueva Donga and hopefully enlarge it. Our secondary objective was to have a look at the pitch in the entrance of what is now known as Practice Pot. Alistair and Dreads went over to Practice Pot…
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Cueva del Marniosa – Upstream avens (Part 2)

by Dan Workman The planned trip as of Monday eve was Sam and I to continue the climbing whilst Dave and Derek resurveyed the upstream passage behind us. However, in the morning Derek was not feeling up for caving and we were reduced to a group of three. We set off slightly later than planned…
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Cueva del Marniosa – Upstream Avens (Part 1)

by Sam Deeley Having been driven down to the entrance by Joe, we entered the cave at 1300. Bob and Dave led the way to the streamway, after which we split into two parties. Following the directions of Dave, specifically details of the climb over a calcite flow, we reached the first boulder choke. Quickly,…
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Cueva del Marniosa – Sump 2 push         

   Josh Bratchley, Rob Middleton, Joe Daniels, Arwel Roberts A late start saw us in the cave not long after 13:00 (much better via Land Rover) and good progress was made down the entrance series to the 1st Pitch in the downstream passages where we’d left our 3 bags of cylinders the day before. Here…
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