A while ago (up until 1996 or so), tennis in India used to be played on courts made from dried cow dung, normally during Davis Cup ties, but also during tournaments such as the Indian Open (Vijay Amritaj notably won the title in 1977 in Mumbai when it was held on cow dung courts, who indeed went on to win multiple titles on the surface).According to this page, the cow dung paste is made in a large barrel using a stick of bamboo, which is used to mix the dung and the water together. This process can yield about 200 litres of cow dung paste. (See image below.)According to John Newcombe, who played in a Davis Cup tie against India on cow dung courts in 1973, the court played rather like fast hard clay-courts. Other players say that it gave them good footing, and that the surface was gentle on the knees: they were harder than clay, but softer than hard-courts.I am therefore proposing that an event, or multiple events, be held on cow dung in 2016. Appropriate spots in the calendar might be just after Miami (to prepare for the clay-court season) or just after Wimbledon, to prepare for the hard-court season.However, I might be interested in seeing some tournaments, like the Madrid Masters 1000, played on cow dung. The blue clay experiment didn't go to plan, since it wasn't prepared well: however, the cow dung courts might present a golden opportunity for the tournament to redeem themselves after their mishap in 2012, and possibly open the gate to all sorts of exotic new surfaces made from various types of dung. Cow? Horse? Human dung, perhaps?It might be a bit of a stretch, but perhaps as an homage to the famed cow dung courts, the Barclays ATP World Tour Finals could also be held on cow dung.It would certainly add some variety to the tour, too.Thoughts? Should the ATP bring back cow dung courts?