In-situ investigations on the lunar surface by automated systems require a Moon-based infrastructure consisting, as a minimum, of--a Lunar Lander, to land the required equipment on the Moon;--equipment for physical and chemical analysis of the material;--optical devices for localisation and description;--manipulators for handling and transfer;--communication equipment for data transmission; and possibly--a rover for excursions in the terrain.This paper presents an overview of potential concepts and technologies needed for tasks in a lunar surface exploration programme, and is based on an ESA in-house assessment performed in 1993/94. The assessment addresses the functional and operational requirements associated with a geological survey of the Moon, using a mobile surface vehicle on which the necessary scientific and support equipments are mounted. The paper concludes with a survey of technologies which should be addressed with priority in a technology development programme in Europe.