Officials at Carlsbad Caverns National Park say the elevators are out of service again.
The temporary outage stems from a safety test Thursday morning during which one of the secondary elevator cars unexpectedly stalled in the hoist way with no passengers aboard.
For safety reasons, the elevators were taken out of service while mechanics assessed the situation.
Technicians from an elevator company are being called out to determine the cause of the malfunction and what repairs might be needed.
Officials say the elevators will be placed back in service as soon as it's safe.
The elevators came back online in May after being down for months while crews installed new steel reinforcing beams and wall anchors in a hoist way. Structural engineers signed off on that work.
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