the caves. Boho quarry, in which there are a number of entrances to the cave, was active until the mid-1950s and many local people would have explored short sections of the cave during and before this time. The Yorkshire Ramblers explored Boho Caves in 1907 but it was not until the mid-1960s that a survey of this complicated system was attempted by Dublin cavers. The system was extensively resurveyed by the Reyfad Group in the 1980s. Access Boho is a cave much used by guided educational parties studying the local environment and by casual visitors, but exploration should never be undertaken lightly. In wet weather the narrow passages flood quickly and at these times the cave is extremely dangerous and should be avoided. Heavy flood pulses have been known to inundate the cave up to 24 hours after heavy rain has ceased, and the entire system is known to flood to the roof in under an hour. It is also recommended that the Upper Ravine area downstream of Boho quarry should not be visited under any circumstances because of roosting bats. Fauna The main biospeleological interest in the Boho area is the population of approximately 50 Daubenton's or Water Bats () which roost in the Upper Ravine Cave. These were recorded as early as 1895 by Lyster Jameson (as ) and specimens were sent to the then Science and Art Museum in Dublin. On this visit, Jameson and his guide, Rev. A. Knight, also identified two large spiders, and , and three additional invertebrates that were likely washed in by floods: the water bug and two flies belonging to the genera and . Lass of the University of Nottingham (in Hazelton, 1974) made extensive faunal collections in Boho Caves which included the identification of the troglobitic Springtail (). Phil Chapman cites the collection of a stickleback () from Boho and the Field Shake Holes and Southern Series have been observed to support a large spider population (). The strong draughts may bring trogloxenes into the cave on which this population thrives. The record of the water beetle, , was of some interest at the time of the caves' declaration as an ASSI in 1985, as there had been no other modern Irish records of this cave-dwelling species up to this point. See also Caves of the Tullybrack and Belmore hills List of caves in the United Kingdom List of caves