as to the current numbers of the Afrikaner population, in 1973, Kalahari Boer made up about 10% of the population in Ghanzi. Geology and climate The district's land surface mainly consists of gently undulating sandveld which lies between 1,100 and 1,230 meters above sea level. The Kalahari is the largest continuous stretch of sand in the world, covering some 2,500 km2. Karoo sediments, covered by younger basaltic lavas, underlie most of the Kalahari sands and about half of the country of Botswana. The sands of the Kalahari vary in depth from 5m to 200m. The climate is semi-arid. Mean maximum daily temperatures are 33-45 °C in January and around 22 °C in July; mean minimum temperatures are 4 to -5 °C in the winter months. The long-term mean annual rainfall is around 375mm although this can vary by up to 50% year by year. Generally speaking, both the climate and the soils are unfavorable for arable farming. Small cultivation is spread over the district but is limited to subsistence crops of maize, sorghum, beans, peas, and melons. The record high temperature ever registered in Ghanzi was . The lowest temperature registered in Ghanzi was . Commercial developments Ghanzi has three banks – Barclays Bank, First National Bank, and Bank Gaborone, all of which have ATMs. Ghanzi now has three shopping centres: Ghanzi Spar, Shoprite and the recently opened Choppies, another retailer in Botswana. Ghanzi Airport serves the town. There is currently no scheduled service, only charter and private operations. Tourism and events Ghanzi is well known countrywide for its annual agricultural show usually held in August each year. The show was first held in 1974 with initial aim to exhibit livestock breeds, for the longest time livestock breeds exhibition has dominated part of the activities of the show. However in recent years crop production exhibition has gained a spot in the show as way of diversifying activities of the show and the agricultural aspect of the region. Stakeholders and government departments like Local Enterprise Authority also exhibits at the show. Actions are also held at the premises and BDF (Botswana Defense Force) usually comes to show their weaponry. Ghanzi is a stop over point for travellers wishing to visit the Okavango Delta; there are many lodges in the area and three filling stations. It is the only available fill-up point between Kang and Maun, which is about 500 km, if