“The light of each other’s tunnel” is a metaphorical phrase that means two people, each facing their own difficult situation or “tunnel,” are providing hope and support to one another by being a source of light in the darkness of the other’s experience; essentially, they are finding strength and encouragement in each other during tough times.

Key points about the phrase:

• “Tunnel” as a metaphor:A “tunnel” often symbolizes a challenging or difficult period in life, where you can’t see the way forward clearly. 
• “Light” as hope:The “light” represents a sign of hope or a positive outcome at the end of the tunnel. 
• Mutual support:By saying “each other’s tunnel,” it emphasizes that both individuals are experiencing their own difficulties, but they are finding solace in the presence and support of the other person. 

Example usage:

• “Even though we’re both going through tough times, we’re able to be the ‘light of each other’s tunnel’ and help each other through.”
• “Their friendship became a beacon of hope, acting as the ‘light of each other’s tunnel’ during their challenging times.”

Peace