We discuss accelerator production of neutrinos in underground laborato
ries via the C-12(p, n)N-12 reaction. Proton beams within the reach of
current accelerator design and economic constraints can produce fluxe
s up to ten times that attributed to the sun. Intense neutrino fluxes
in low-background environments would open up new possibilities for cal
ibrating and developing solar neutrino detectors and for other low-ene
rgy neutrino physics.