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The inferior olive appears rostrally at or just below the the level of the obex. Here we see the pyramids on the ventral surface and they are bounded by the inferior olives dorsal laterally. The gracile nuclei have finished decussating but some of the cuneatus cells are still forming internal arcuate fibers. Lateral to the cuneatus is the external cuneate nucleus that represents the upper most part of the Clarkes column as an ipsilateral cerebellar projection (cuneocerebellar tr) . Just ventral to the external cuneate is the spinal 5th tract and nucleus. A solitary fasciculus flanks the hypoglossal/ dorsal motor nucleus of the vagal complex