Monument at the entrance of the national park. The cross lamina is also well represented. By the way, the entrance fee is 200 Baht, 10 times the price for foreigners, but it was only 20 Baht for me. All fees are paid by the school.
After passing through the park visitor center, you will soon come to a steep slope to climb. At first I thought it was concrete, but it was a real sandstone layer containing gravel. In a related paper to be presented later, a series of strata in this area are described as follows: meandering river deposits by thick floodplain deposits and some channel deposits.
The same is true here. I am not sure why the sandstone in the center is softer. It seems to be a difference in the degree of diagenesis.
As you can see, the cross lamina is a beautiful conglomerate-bearing sandstone layer. The gravels are mostly circular gravels. It also looks like quartzite.
Close-up of a soft part. It looks like a flood deposit of a huge river.
Beautiful pink flowers. Ms. P, my Japanese teacher, asked me what the flower was called in Japan, but I am not familiar with flowers.
The three teachers from Mukdahan who went with us. In the center is Mr. W who drove us. This rock seems to be the symbol of this park.
Cross lamina can be seen at the foot of the rock. The strata are almost horizontal, so the sedimentary structure is distributed along the contour lines.
Dogs can be found even here. There are dogs everywhere in Thailand. They are following Dr. W. The white areas are where the washed out gravels are accumulated.
This is a washed out gravel in sandstone. The origin of the quartz gravel was not clear.
Yellow flowers. Just looking at the flowers is fun because there are so many different kinds.
Mr. W told me that there is a heliport.
Is it for the helicopter bringing a medical doctor?
This is a very strange plant, and the most interesting discovery this time. There are two kinds of plants, one is right-handed and the other left-handed. I have never seen it in Japan.
From the top of the plateau where a pavilion is located, we looked at the waterfall guide and headed for the nearest waterfall. The women are waiting for us in the azumaya.
Follow the surface water stream for a short distance down the path. There are white flowers here.
Potholes are found. Is there a waterfall near here? There are potholes all around.
The waterfall is a little small than I expected, but it's the closest one, so it can't be helped. The visitor center's information map said that there were several more serious waterfalls further away. There is also a pothole above the waterfall. It is still sandstone mixed with gravel.
http://library.dmr.go.th/
I changed the photo a little. On the way back from this waterfall, I saw what looked like a dry fissure. I think so, because it is mentioned in a related paper. The related paper is as follows.
http://library.dmr.go.th/Document/Proceedings-Yearbooks/M_1/2557/8593.pdf
The pavikion is now in sight.
Take a picture on the way back.
A ranger at the Visitor Center gave us a briefing.
A fresh piece of sandstone. It looks a little tuff.
This is a very minor national park, and is rarely mentioned on tourist websites. At first, we went along the road where we could see some geological formations. The entrance fee was 20 Baht.
This seems to be the geological formation we are looking for.
In the end, we turned back without understanding much about it. As expected of a minor national park, there were no signs explaining about it. There was no signboard explaining about it.
