Feast of Beltane Long ago, Celts celebrated Beltane, which was a calendar feast that welcomed summer. Bonfires figured largely into this celebration, and some activities included dancing around the fire, burning effigies of witches(?), and herding cattle in between bonfires. Fire was seen as a purifying source. In recent years, neopagans have begun to celebrate Beltane once more.
May Day is related to the Celtic festival of Beltane and the Germanic festival of Walpurgis Night. – it has traditionally been an occasion for celebration. As Europe became Christianized, the pagan holidays lost their religious character and either changed into popular secular celebrations, as with May Day, or were merged with or replaced by new Christian holidays. http://en.wikipedia.org/wiki/May_Day
Fairy rings also occupy a prominent place in European folklore as the location of gateways into elfin kingdoms, or places where elves gather and dance. According to the folklore, a fairy ring appears when a fairy, pixie, or elf appears. It will disappear without trace in less than five days, but if an observer waits for the elf to return to the ring, he or she may be able to capture it.
On Beltane one celebrates the beginning of summer, fertility, passion, and ritual with bonfires and May Pole dancing. It's a day to honor life. The name Beltane translates to "bright fire", the "bale-fire".