Taking place across three dates in autumn and spring 2018, Field Book is an ongoing series of guided walks along the margins of Te Whau river. Hosted by HOOP-LA the walks explore riverside reserves, discover little known monuments and other semi-public spaces. Through hospitality and acts of gentle trespass, and by providing an ongoing cumulative document, the Field Book, the walks anticipate the construction of Te Whau Pathway and other large scale changes to this urban landscape already in train. The Field Book walks generate a form of performative advocacy by simultaneously gathering and dispersing local place knowledge and providing a temporal performative forum in which desires for the future are discussed.