These are often made in the context of religion. At first glance, vows appear to be a promise based on certain conditions. For instance, "If my wish comes true, I will sacrifice an animal”. There are also other vows for the good of a person or a group, such as lighting candles. Vows may be aimed at an animal or object as well as behavior or a change in attitudes. Fasting is one example. Places near rocks, trees, water and the graves of holy figures may be used for votive offerings.
On the same subject, places which are considered sacred include the graves and tombs of holy figures, intersection points of three or four roads, wells, springs, fountains, pools, lakes, trees, plants etc.