  At the Royal Society meeting in 2023, we have mainly presented our lunar
orbit array concept called DSL, and also briefly introduced a concept of a
lunar surface array, LARAF. As the DSL concept had been presented before, in
this article we introduce the LARAF. We propose to build an array in the far
side of the Moon, with a master station which handles the data collection and
processing, and 20 stations with maximum baseline of 10 km. Each station
consists 12 membrane antenna units, and the stations are connected to the
master station by power line and optical fiber. The array will make
interferometric observation in the 0.1-50 MHz band during the lunar night,
powered by regenerated fuel cells (RFCs). The whole array can be carried to the
lunar surface with a heavy rocket mission, and deployed with a rover in 8
months. Such an array would be an important step in the long term development
of lunar based ultralong wavelength radio astronomy. It has a sufficiently high
sensitivity to observe many radio sources in the sky, though still short of the
dark age fluctuations. We discuss the possible options in the power supply,
data communication, deployment, etc.
