Passover holiday marks the liberation of  Israelis from Egyptian slavery.
It symbolises freedom and as one of the pilgrim holidays, it is celebrated with walks in nature and various hikes.

During Passover, Jewish people eat so called matzah bread as a symbol of the fact that the Jews did not manage to prepare the dough for bread before their departure from Egypt. 
On Seder night, families read Hagada together and listen stories about  G-d's miracles that blessed the Jewish people on their way to the Promised Land. 
Chag Sameach!