Caves in 2009) has a complex hydrology which includes drainage from at least five small sinks on the eastern Marlbank (Gortmaconnell Pot, Little Gortmaconnell Pot, Smokey Mountain Sink and two unnamed sinks at Brookfield have been dye traced to Cascades); sections of the Owenbrean River upstream of its main sink at Pollasumera; and most notably Goat Pot, Aghatirourke Pot, Pigeon Pots and Badger Pot on East Cuilcagh, nearly to the southeast. Of these, Goat Pot and Aghatirourke Pot have also been traced to Tullyhona Rising ( east-southeast from Cascades Rising); Pigeon Pots, Badger Pot and Aghatirourke Pot also flow to Gortalughany Rising (an overflow rising on East Cuilcagh); and Badger Pot and Pigeon Pots also flow to Shannon Pot on the far western slopes of Cuilcagh. Show cave Édouard-Alfred Martel first postulated that Marble Arch Cave would make a worthy show cave after initially exploring the system in 1895. However it was not until 1982 that work eventually began on creating a new underground tourist attraction. Development included: Building concrete and metal walkways with handrails throughout the show cave; Installation of electric lighting; A new tunnel between Pool Chamber and New Chamber, providing walking access to Skreen Hill passageways; An access shaft and staircase into Skreen Hill passage from one of the large surface dolines on the plateau; A short section of walled pathway dug into the floor of the cave, under a low ceiling—the "Moses Walk" is so-called because the river continues to run at shoulder level either side of the path; A visitor centre, car park and access road on the surface. Covering a section of the main stream passage of the system, the Marble Arch Caves show cave was opened to the public on 29 May 1985. Visitors travel through the first part of the caves by boat on the subterranean Cladagh River, before walking through the rest of the chambers. Between 1985 and 2008 the show cave attracted approximately 1 million visitors, from 100 countries worldwide. Annual visitor capacity (during the period that the cave is open, March–September) is 94,060. European/Global Geopark status In 2001, the caves and the nearby Cuilcagh Mountain Park joined to become a European Geopark under the name Marble Arch Caves European Geopark, the first park in the UK to be recognised by the European Geoparks Network (EGN). This allocation was due in part to the existence of the caves themselves and