In 2016, the same year the plant was listed extinct, the National Tropical Botanical Garden teamed up with drone operator Ben Nyberg to supplement the work of intrepid scientists like Wood, who rappel down cliffs and trudge through rainforests to conserve plants. In January, National Geographic reports, Nyberg saw what looked like a Hibiscadelphus woodii plant while surveying via drone. (His strategy, the magazine added, combines a methodical "grid system" analysis with "intuition.") The following month, Nyberg and Wood hiked 700 feet into the valley, according to Quartz. Unable to go further, they flew a drone 800 feet deeper into the ravine. The image the drone transmitted back to their portable monitor confirmed their hopes: living Hibiscadelphus woodii plants.