It seems like you had a very good experience in Vietnam ! I would like to visit a cave myself and take photos inside and share it with people that I know and overall keep it as a memory.I'm sure you felt nature when you entered the cave, you saw what nature has created.
Thank you for contributing to the Steemit Community.Keep up the great work and I'm looking forward to your next posts.
Yes, it was so beautiful - thanks for the kind words!