Where the earth tubes get close to the house we have built a block work chamber to concentrate the air flow down too a smaller tunnel to pass under the foundations of the house. The chamber is 300mm below the path round the house.
![Earth Tube Chamber 16 Sept - Ready for blocks Concrete ready for the blocks](http://roselea.co.uk/wp-content/uploads/2010/09/Earth-Tube-Chamber-16-Sept-Ready-for-blocks-1024x768.jpg)
![Earth Tube Chamber 17 Sept - Down a tube view down a tube](http://roselea.co.uk/wp-content/uploads/2010/09/Earth-Tube-Chamber-17-Sept-Down-a-tube-953x1024.jpg)
![Earth Tube Chamber 16 Sept - Test of blocks Test fit of the blocks](http://roselea.co.uk/wp-content/uploads/2010/09/Earth-Tube-Chamber-16-Sept-Test-of-blocks-1024x768.jpg)
![Earth Tube Chamber 17 Sept - Chamber Finished (2) Finished chamber](http://roselea.co.uk/wp-content/uploads/2010/09/Earth-Tube-Chamber-17-Sept-Chamber-Finished-2-1024x768.jpg)
A DIY Selfbuild by Stephen, Shaun & Daphne
Where the earth tubes get close to the house we have built a block work chamber to concentrate the air flow down too a smaller tunnel to pass under the foundations of the house. The chamber is 300mm below the path round the house.