The small entrance made sure that bigger bodies would not be able to get in unless it was blasted open, also made it less conspicuous.
Download free sample chapters, or buy the books:
Click on your area of interest to choose from over 30,000 pages about old Hong Kong:
Or choose a popular article:
Comments
Japanese tunnel
The small entrance made sure that bigger bodies would not be able to get in unless it was blasted open, also made it less conspicuous.