Three-dimensional seismic modeling demonstrates that the intragraben horst-like feature imaged on COCORP's Socorro-Abo Pass survey in the Albuquerque Basin, New Mexico likely corresponds to the northeast-plunging continuation of the Ladron uplift. This accords with the original interpretation which was expounded with reservations that the feature might be a result of side reflections off a nearby exposed basement uplift. This domed feature on Socorro Line 1A, referred to hereafter as the Ladron horst, cannot be a consequence of side reflections from nearby Ladron Mountains. Three-dimensional modeling defines a minimum northeastern extent of the Landron uplift in the subsurface, confirms some aspects of previous interpretations, and offers a new interpretation of the apparent western boundary of the horst. Second-order discontinuities in the reflections off the horst are modeled as normal faults within the subsurface basement uplift. ¿ American Geophysical Union 1988