They were created the twelfth and thirteenth centuries in drainage channels (grooves) excessively wet, and therefore are not suitable for cultivation.

The climate is continental Mediterranean, very extreme: strong frosts in winter (especially in February) and outside of the heat (but not as hard as the Ebro Valley).

Most of the part of the present municipality witnessed the wanderings of San Iñigo, confessor Sancho III Major and it is well documented that withdrew into the mountains Tobed.

Mainar is a participle of a visigothic irregular verb "magan, main" which means "take heart on the battlefield."

Mainar was a member of the Community of Daroca Villages from 1248 until the dissolution of the same in 1833 with the formation of the current provincial division.

He suffered the agitations of the Carlist wars strongly enough because the surrounding mountains were favorable for the guerrillas to hide.

The most valuable piece (A statue of San Blas originated between 1400 and 1450) does not deserve the attention of so famous looter.