The Stone Forest in Yunnan, China is a UNESCO World Heritage Site. The stone formations were created as the limestone eroded.
The Stone Forest (South China Karst) area was a shallow sea some 270 million years ago (the Permian period) when the sandstone and limestone deposits were formed. The entire Shilin National Scenic Area (昆明市石林风景区) covers an area of 400 square km.
I stayed a couple months in a house rental in Hoi An, Vietnam. I enjoyed it a great deal (follow the link for a map of my favorite spots in Hoi An). There isn’t much to do in Hoi An, but it is a quiet place with warm weather and good food and internet so that is enough to make me happy.
It was about a 15 minute bike ride from my house to the beach. The video shows the start in the small alley (where my house was) and onto the main road.
The water has an amazing blue color that seems almost fake in photos but is really the color of these photos. The blue is due to dissolved copper.
The Kuang Si waterfalls are about 30 km outside of Luang Prabang. You can rent a open back pickup for about $30 (really I forget I think it was about that amount though) for the trip or you can join a tour group (easy to arrange at many guest houses and travel agents all over Luang Prabang).
All I had with me at the time, was my iPad mini and this is the best photo I could get. Zooming in on the fire rainbow provided very poor photos. The iPad mini and iPhone (and other smart phones) have remarkably good cameras for many shots. But for a few types of shots they are very poor. Getting a good shot of this rainbow was one such case.
A circumhorizontal arc (also known by the exciting name, fire rainbow) is an optical phenomenon – an ice-halo formed by plate-shaped ice crystals in high level cirrus clouds. If the cloud is at the right angle to the sun, the crystals will refract the sunlight just as when rainbow is created.
Fire rainbows can only occur when the sun is 58 degrees or higher above the horizon and when the clouds or haze contain plate-shaped ice crystals. The arc has a considerable angular extent and thus, rarely is complete. When only fragments of a cirrus cloud are in the appropriate sky and sun position, they may appear to shine with spectral colors.
One of the most enjoyable days of my life began at Glacier National Park (USA) and continued in the Canadian portion of the park (Waterton International Peace Park). The parks share a long border and amazing natural beauty.