<p>The aim of this summary document is to pass on current knowledge, including between one year and the next year’s expedition, about pitches that have
significant flood hazards. The same info should also appear in each cave description, but sometimes they are out of date.</p>
<dd>The lower two pitches of the entrance series become very wet or fully impassable. This includes the longest (~30m) hang – especially its lower part and ledge, and the final 10m pitch. A short period of rain can cause these pitches to become very drippy and unpleasant, but passable. However, heavy and/or sustained rainfall produces water spouts both on the main hang, and on the bottom pitch; thereby making the entrance series impassable. The response of these pitches to surface rain is quick. It can also take several (or more) hours for the water levels on the pitches to drop. Suitable kit for sitting out a flood (bothy bag, stove, food etc) should therefore be installed from start of expedition at the base of the entrance pitch.</dd>
<p>The main streamway below Pete's Purgatory gets very wet and dangerous. You will be washed down the passage. ARGE suffered a floodpulse here in
2011(?) and only lucky timing (they had not quite set off) avoided an extremely serious situation. Only go below this point is very settled weather.</p>