"The 'Stone Garden' is located in Hoang Tung commune, Hoa An district (now Thuc Phan ward). The name 'stone garden' comes from the fact that the limestone here has been uniquely eroded and weathered.
Visiting this place, tourists can admire sharp limestone peaks over 20m high and over 10m wide. Covering them is the reddish-brown color of clastic sediments and younger volcanic rocks of the Song Hien Formation (T1sh).
The Hoang Tung Stone Garden reflects a period in the long geological development history of the region. Continental rifting (a narrow, elongated sea similar to the Red Sea between Asia and Africa today) occurred in the Triassic period (about 250 million years ago), giving rise to many underwater volcanoes and depositing sediments, forming clastic-volcanic rocks covering older limestone. These sedimentary-volcanic rocks are the basis for scientists' confirmation of the existence of..." The aforementioned inland rift.

The processes of weathering, dissolution, leaching, erosion, and stripping... under later continental conditions (approximately 5 million years ago) stripped away part of the upper rock layer, while water seeped from the surface down through cracks in the severely fractured limestone, creating the rock columns we see today.

These unique features not only have scenic value but also significant scientific meaning, and will certainly be very beneficial for visitors to the "Rock Garden".