Tents and wattle and daub huts preceded more substantial structures. They were built of massive timber posts chinked with wattle and daub mortar. The walls were constructed using the wattle and daub technique. Today, they live in unpretentious huts of wattle, daub and thatch. Very few 19th-century houses of wattle and daub or split timber have survived. In Europe, long houses built from wattle and daub were constructed. Jacal construction is similar to wattle and daub. The frame was usually filled with wattle and daub but occasionally with brick. Four rectangular rooms, constructed from wattle and daub, lie around a courtyard. The other houses seem to have had simple wattle and daub walls. Bajarreque is a wall constructed with the technique of wattle and daub. Mud (wattle and daub) has seen extensive use. Wattle and daub is one of the oldest building techniques. The wattle and daub technique was used already in the Neolithic period. The citizens of Pavlograd lived in wattle and daub.