A site with thousands of potholes, locally named “Samphunbok (SPB),” and a giant pedestal (mushroom) rock possess a very high geological value. The potholes are being formed on the riverbed of the Mekong River; whereas the giant pedestal rock is the largest on the Khorat Plateau, and is located in Ubon Ratchathani province, north-eastern Thailand. Based on detailed geological, geomorphological, and sedimentological perspectives, this paper presents the geological history of both erosional features for the future promotion of the Global Geopark Network. The giant pedestal rock is likely to be a remnant of degradation and weathering after a regional tectonic event. It is sculptured in the fracture zone of thick sandstone beds after uplifting and folding. No evidence of abrasion by wind was found. The formation of potholes is limited inside the Mekong River bankfull elevation. The appearance of potholes in different levels of the sandstone beds infers their formation in relation to the vertical evolution of the Mekong River. All geological data shown in this paper confirm the rareness of potholes and the giant pedestal rock in terms of how they were sculptured and preserved through time. These erosional features at SPB are discussed and introduced in this paper as a global geological heritage site.

一个有成千上万个坑洞的地方，当地名为“ Samphunbok（SPB）”，还有一块巨大的基座（蘑菇）岩石，具有很高的地质价值。湄公河的河床上正在形成坑洼。而巨大的基座岩石是霍拉特高原最大的岩石，位于泰国东北部的乌汶叻差他尼府。基于详细的地质，地貌和沉积学观点，本文介绍了这两种侵蚀特征的地质历史，以促进全球地质公园网络的未来发展。区域构造事件发生后，巨大的基座岩石可能会残留下来的退化和风化作用。在隆起和折叠后，它被雕刻在厚砂岩层的断裂带中。没有发现风磨损的迹象。湄公河岸高程内的坑洼形成是有限的。在湄公河的垂直演变过程中，不同水平砂岩层中坑洞的出现可以推测其形成。本文显示的所有地质数据都证实了坑洞和巨大的基座岩石的稀缺性，因为它们是如何随着时间的流逝而被雕刻和保存的。本文讨论并介绍了SPB的这些侵蚀特征，将其作为全球地质遗产。