On 2008-04-19 09:42:02 +0100, Hugo Nebula abuse@localhost said:
spection. OTOOH, it might. "Ya pays ya money...".

Think about why a wider chamber is called for at greater depths, and
try this little experiment: lying on the ground, can you get your hand
to the bottom of the channel? If you can't, how are you going to be
able to clear a blockage if it did occur?

Send for Dynorod?