Can you hook container reasonably high on the chain. Every extra cm higher it is might mean being in water or not if the floods arrive!. Been told these roads flood, marsh road does and this is where the tunnel goes under. Know what the weather is going to do. Do not do this if chance of rain. tunnel fills to top with water (rubbish for a cache then, thought a good idea when looking at brook route on os map).
Did some caches about this brook and got me thinking, an underground one or two around here. managed one as other place was barriered off.
Park in Marsh road (on street parking) and cross Cowley/ Oxford road to drop in point and where tunnel is.
I like the nearby big Florence park that is not far away and could park in Rymers Lane and walk up the footpath from there to tunnel entry point. Cowley marsh park in the road the brooke goes under has parking and a nice kids play park if doing as a group or pair with a kid.
goggle street view here
Florence park also has parking, a little café and toilets.
So where is the cache.
Ignore the 1st man hole cover you see as that not 10m in I think.
Get past 2 manhole with a few foot holds coming out the wall. So after the main 2 after some way in,there is a good straight section where height increases a bit and before it drops 15cm or so again the cache is hanging up in corner on the left at roof level.
The below information has been adapted from a very interesting website on the history of Headington. For more information about the history of Boundary Brook or Headington, please see this web site.> link to it
In 1889, Boundary Brook marked the eastern boundary of the City of Oxford, and was the boundary separating Oxford from three neighbouring villages: Headington, Cowley and Iffley. Three of the boundary stones set up in 1892 are still in existence today; two of these are in Headington and the third is in Cowley (on Barracks lane). Boundary Brook marked the eastern boundary for 40 years, until 1929, at which point Headington, Cowley and Iffley were brought into the city boundary of Oxford and became suburbs of Oxford. Boundary Brook starts just south of the present Cuckoo lane, and runs south down Headley Way. These days it starts underground, but up until the 1930s it was in the open, with steam engines refilling their water from it. The brook crosses the road at the point marked by the boundary stone, the point at which Headington and London Roads meet (hence the change in name here). The brook then continues underground, under the back gardens of residential houses to the east of Valentia Road, crossing Old Road half-way between Valentia Road and Highfield Avenue, finally surfacing after a short bend to the east. Interestingly the brook was piped underground for this section (alongside Valentia road) in the 1980s for health and safety reasons. After surfacing, the brook runs south in-between Oxford University’s Old Road Campus and Mileway Gardens, passing underneath Roosevelt Drive. This part of the brook is currently part of the “Boundary Brook Wildlife Corridor”. The brook continues south past the Churchill Hospital and then turns south-east running along the edge of Southfields golf course. After meeting Lye Stream it makes a sharp south-west turn into Cowley, running down and under Barracks Lane. The brook then goes underground again near Marsh Lane, resurfacing on the south-west side of Cowley Road. Boundary Brook then continues towards “Boundary Brook Nature Park” by running under Rymer’s Lane and along the north boundary of Florence Park to Iffley Road. After passing the Boundary Brook Nature Reserve, the brook makes its final journey to the River Thames, reaching it just south of Donnington Bridge.
More water caches but miles away in Abingdon.
A good hard water based cache, can stand up for a good amount when in but needs a floatation device. Stert stream
My easier other tunnel based cache (no floatation device needed) is this. Radley brook
Not quite as hard but 3 foot head height so a lot of bending. Larkhill stream
Another wet one. The A34, the wet one
My Last Abingdon based water cache is this. Under the bridge, you might get wet
My Last water based cache is this, it is in wantage. Let's go up the concrete pipe. You will get wet
My friend Jasons underground stream one I help set up. Charlie's Hole