Rotorua vs Valley

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Rotorua [ˌɾɔtɔˈɾʉa] (Māori: Te Rotorua-nui-a-Kahumatamomoe "The second great lake of Kahumatamomoe") is a city on the southern shores of Lake Rotorua from which the city takes its name, located in the Bay of Plenty Region of New Zealand's North Island. It is the seat of the Rotorua Lakes District, a territorial authority encompassing Rotorua and several other nearby towns. The majority of the Rotorua District is in the Bay of Plenty Region, but a sizeable southern section and a small western section are in the Waikato region. Rotorua is in the heart of the North Island, 60 kilometres (37 miles) south of Tauranga, 80 km (50 mi) north of Taupō, 105 km (65 mi) east of Hamilton, and 230 km (140 mi) southeast of the nation's most populous city, Auckland.

Rotorua has an estimated permanent population of 58,500, making it the country's 12th largest urban area, and the Bay of Plenty's second largest urban area behind Tauranga. The Rotorua District has a total estimated population of 77,300, of which 3,600 live in the Waikato section.Rotorua is a major destination for both domestic and international tourists; the tourism industry is by far the largest industry in the district. It is known for its geothermal activity, and features geysers – notably the Pohutu Geyser at Whakarewarewa – and hot mud pools. This thermal activity is sourced to the Rotorua caldera, in which the town lies. Rotorua is home to the Toi Ohomai Institute of Technology. The Lakes of Rotorua are a collection of many lakes surrounding Rotorua.

Source: Wikipedia

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A valley is an elongated low area often running between hills or mountains which will typically contain a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period of time. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in valleys in high mountain or polar areas. At lower latitudes and latitudes, these glacially-formed valleys may have been created or enlarged during ice ages but now be ice-free and occupied by streams or rivers.

In desert areas, valleys may be entirely dry or carry a watercourse only rarely. In areas of limestone bedrock, dry valleys may also result from drainage taking place underground rather than at the surface. Rift valleys arise principally from earth movements, rather than erosion. Many different types of valley are described by geographers, using terms that may be global in use or else applied only locally.

Source: Wikipedia