and slows down the flow through retention ponds then finally empties into the rivers through outfalls. A site-specific integrated horizontal sculpture "Outfall" cast from high-performance Ductal™ concrete designed by New York sculptor Brian Tolle, - who worked "close collaboration with the landscape architecture firm of marc boutin architectural collaborative inc." - is an inverted, day-lighted, computer-generated scale-model of Mount Peechee north of Canmore, Alberta which acts as a functional retention pond to hold excess water during heavy rainstorms while providing a platform so visitors can view the movement of the water. According to a favourable 2002 New York Times review of Tolle's Irish Hunger Memorial in Battery Park City, Tolle's populist postmodern art "exemplifies contemporary art's ability to meet the public's need for meaningful monuments with an appropriateness that may surprise both advocates and opponents of the new." Prehistory Just to the west of Parkdale, two buried campsites dating back to dated to 4600 and 4000 BP were uncovered during the construction of McKay Towers in Point McKay, along with more recent tipi rings. There were also two historic sites, a possible Métis encampment and the evidence of an early Chinese settler. Archaeologist Michael Wilson undertook investigations of these sites in 1977 and 1978. In 1973 the province of Alberta passed the Historical Resources Act, prior to which developers were not required to hire archaeologists to survey tracts of land slated for development so there is probability of other archaeological sites in Parkdale that were not investigated. It has been suggested that across the river from "outfall" is a buffalo jump. See also List of neighbourhoods in Calgary References External links Parkdale Community Association Neighbourhoods in Calgary History of Calgary 1910 in Canada