The Master Cave starts as an impressive 5 metre high by 4 metre wide streamway with a shallow arched roof. Continuing upstream from FALL POT a small inlet on the right is the start of WOODHOUSE WAY
The master cave continues as a high rift with several boulder obstacles to where the way narrows and a series of deep pools and small chutes are encountered. Eventually more breakdown is reached and the passage swings left beneath the large collapse of STAKE POT
The best route through the boulders is to follow the north wall (left facing upstream) of the passage through the choke. The High Level Route crosses over the Master Cave at this point and it can be gained by a series of climbs up a rocky slope on the right.
Beyond the entrance to this passage the Master Cave can be followed across a deep pool and up a water chute to a section where the roof gets lower and boulders start to make up the roof. Just beyond the point where Breakdown Passage re-enters the main stream is a climb up on the left through boulders in to the High Level above. The streamway continues through a complex boulder choke to Oxbow Corner. Some of the route involves crawling in water and these sections can be cut off in high water conditions. Take care.
In the streamway upstream of Oxbow Corner there is a section of stooping passage passing the entrance to Maracaibo on the left. Beyond here the passage enlarges at a breakdown chamber with a high level route through muddy passages back to Oxbow Corner. The only way on upstream is at stream level and is through low wet passages. A route has been forced in drought conditions to a point beneath Lower Snail Cavern, where a climb up through boulders joins with the HIGH LEVEL ROUTE at Snail Cavern. The streamway route continues with some more low wet sections to EUREKA JUNCTION.
Back at OXBOW CORNER a steep slope up boulders leads up to the end of MONTAGU EAST PASSAGE and into OAKES' CAVERN, THE MINARETS and the high level route to Stop Pot. A low passage leading upwards to the right is the Minarets Bypass which joins the HIGH LEVEL ROUTE at Cornes' Cavern.Another route leads up a climb against the north wall to a muddy passage linking to Maracaibo and a confusing and unstable route through boulders back down to the Main Drain and the breakdown chamber mentioned above.
Stake Pot Inlets
This series of passages is entered at the upstream end of the Stake Pot boulder choke and starts as a narrow stream passage. It leads to the bottom of the Magic Roundabout Series and also links to the STAKE POT SERIES. Following the twisting inlet for about 30m leads to a connection with the Stake Pot Series via a shelf on the right. Climbing onto the shelf leads soon to some boulders, through these a steep muddy slope up to the right leads to a chain and short fixed ladder up through a hole into the UPPER LEVEL beside Bob's Boss. Turning left at the bottom of the muddy slope leads via several obstacles to the bottom of several avens one of which is the Arson Shaft. The 40 metre Arson shaft leads after another 15 metre pitch up into the top of the MAGIC ROUNDABOUT SERIES and Pristine Way. Just before entering the Avens there is a small passage on the right which joins to the lower end of Barlick New Road streamway. Crossing the steam and negotiating boulders and slopes reaches a squeeze between the left wall and a large boulder. Forward reaches a mud slope down to the boulders near the bottom of the Stake Pot Boulder slope near the original stream passage.