The Fire of Bel dedicated to the god Belenus. This is a time of Fertility, Creativity is nurtured. The Maypole, a phallic fertility symbolizing the God is joined with the Goddess as it is places within the Earth. Ribbons hang from the top inviting all to join the dance of fertility weaving the magic of desire. This is a time of wild delight. Jumping the bonfire brings purification and luck. The day the Druids drove cattle between two fires as protection from disease.
Beltane ("Bel-tane"), Beltaine ("Bel-tin"), or May Day begins the season of summer, as well as the "summer half" of the year. Another "in between" feast, it's good for divination, especially about romantic matters. This High Day is dedicated to adolescent joy, contests, frolicking in the woods, romance and passion. Dancing around the Maypole, games, and feasting are the usual requirements. Deities of young love are especially honored.
Beltane, known in Modern Irish as La Bealtaine, in Welsh as Galan-Mai (Calends of May), in Scottish Gaelic as Bealtiunn, and in Manx as Shenn da Boaddyn, Laa Boaldyn, or Laa'n Tourey (Day of Summer); is of course, the day we know in English as May Day. It is also called by a variety of other names, such as Roodmas, Summer Day, Walpurgistag, St. Pierre's Day, Red Squares Day, etc. It is the beginning of the Summer Half of the Year (the seasons of Samradh & Foghamhar) and is a festival of unalloyed joy.
A very large number of important mythological events are connected with this day, which balances out Samhain on the opposite side of the Wheel of the Year. It was on a Beltane that Partholan and his followers, the first inhabitants and partial creators of Ireland, landed on that isle. Three hundred years later, on that same day, they returned to the Other World. It was on a Beltane the the Tuatha De Danann and their people invaded Ireland. It was on a May Eve that Pryderi, the missing son of Rhiannon and Pwyll (Rulers of the Welsh Otherworld), was lost by them and later (on another May Eve) found by Teirnyon Twryf Vlaint (and eventually restored to them). On every first day of May "till the day of doom," Gwyn ap Nude fights with Gwyrthur ap Greidawl, for the hand of Laud's fair daughter, Creudylad. Most of these events, again, as all over Europe, have to do with stories of the forces of light / safety defeating the forces of darkness / danger.