2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211658We present Spitzer infrared observations of the starless core L429. The IR images of this core show an absorption feature, caused by the dense core material, at wavelengths <= 70 micron. The core has a steep density profile, and reaches A_V > 35 mag near the center. We show that L429 is either collapsing or in a near-collapse state.5 pages, 3 figures, emulateapj format, accepted for publication in ApJLAstrophysicstext