Four people spent several hours suspended 150m in the air after technical problems caused a cable car to stop near Nelson last night.

The incident took place at Happy Valley Adventures on Cable Bay Rd, 16km northeast of Nelson. An employee confirmed it occurred, but wouldn't comment further.

Owner Jill Anderson could not be contacted but told Fairfax Media the cable car became stuck when its relay burned out, causing the emergency brakes to default.

The four adults on board were eventually brought to the ground safely.

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