This site has a lot of such information about many expressions of religion......and a bit on Native American rituals.

NATIVE AMERICAN SPIRITUALITY:
bullet The Pueblo tribe observe both the summer and winter solstices. Although the specific details of the rituals differ from pueblo to pueblo, "the rites are built around the sun, the coming new year and the rebirth of vegetation in the spring....Winter solstice rites include...prayerstick making, retreats, altars, emesis and prayers for increase." 6
bullet The Hopi tribe "is dedicated to giving aid and direction to the sun which is ready to 'return' and give strength to budding life." Their ceremony is called "Soyal." It lasts for 20 days and includes "prayerstick making, purification, rituals and a concluding rabbit hunt, feast and blessing..." 6
bullet There are countless stone structures created by Natives in the past to detect the solstices and equinoxes. One was called Calendar One by its modern-day finder. It is in a natural amphitheatre of about 20 acres in size in Vermont. From a stone enclosure in the center of the bowl, one can see a number of vertical rocks and natural features in the horizon which formed the edge of the bowl. At the solstices and equinoxes, the sun rises and sets at notches or peaks in the ridge which surrounded the calendar.

http://www.religioustolerance.org/winter_solstice.htm

Has many wonderful links.

Enjoy.