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A sheer cliff rises above the turquoise river. Tourist boats sail towards the dark cave. Trees on the shore. Branches above the water. Philippines. Palawan. Puerto Princesa Underground River
Underground vaulted urban sewer tunnel with dirty sewage.
Close-up of worker and soldier termites building tunnels and eating wood, causing structural damage in a house, highlighting the destructive nature of these pests
Subterranean termites Reticulitermes lucifugus, termites living under rotten wood old tree stump
Subterranean termites Reticulitermes lucifugus, termites living under rotten wood old tree stump

Free stock photossubterranean (1)