Lansing Point Mangrove TunnelsMangrove TunnelVice City788, -1188Mangrove tunnels so tight a kayak scrapes both sides. 1980s smugglers hid their speedboats here; today it's manatees and rays passing through — and sometimes a speedboat running dark.On the mapOpen on the mapMore places: Mangrove TunnelBlack River TunnelsGrassriversNearbyBlack Point Boat RampBoat RampSouthern Flood PlainFlood PlainPeregrine Bay Power PlantPower PlantHollis's Ship Part #6Spaceship PartThe Lansing Estate MoundUrban LegendThe Cooling CanalsDanger Zone