The research of caves widely deals with geomorphology, meteology, geology, biology, archaeology and physiochemistry. Most famous caves in Korea are in Dongrong Cave in Yongbyun-Goon in 1929, Sungru Cave in Uljin in 1960s. Lava caves were developed as Gymrung Sa Cave, Manjang Cave and Hupje Cave in Cheju Island. Limestone caves, Gosi Cave, Gosu Cave, Nodong Cave and Chundong Cave, were developed for the commercial purposes. Visiting and researching caves are active in Korea. Caves will more be commercialized than before.(omitted)

Karst in Arctic and Subarctic region in North America contains a wide variety of surficial karst landform characteristics due to not only extensive glacial activities, but also interglacial karst processes during the Pleistocene age.(omitted)

THE K-AR METHOD of age determination is commonly used to date rocks from Pleistocene volcanoes in Japan (e.g. Kaneoka et al. 1980, Itaya et al. 1984, Shimizu et al. 1988, Itaya et al. 1989). However. there are still many problems with K-Ar dating of the young volcanic rocks, as reviewed by Itaya and Nagao (1988).(omitted)

The geographical location of Ondal cave is situated between Danyang's cave zone and Yang wol's Kossi cave. The cave is situated at 37$^{\circ}$ 03' North latitude and 128$^{\circ}$ 29' of east longitude and is administratively located in Hari, Yongchun Myen, Danyang Gun, Chung Chong Bug Do. In the light of its natural location, It is situated on the southern side of Nam Han river's water system and in the fort mountain which includes Ondal hill-fort and its mountain range's peak, Nam San.(omitted)

The Cheonbo gold mine is located approximately 8km northeast of Cheonan in southern part of Korean peninsula. The Cheonbo gold deposits are composed of parallel-filling quartz veins that are associated wi th the Cheonan granite which intruded the surrounding Precombrian metamorphic country rocks. Rb/Sr date of the granitic intrusion is 170${\pm}$0. 3m.y., suggesting a middle Jurassic age for gold mineralization.

An abundance of information is available regarding soil horizons and their characteristics. Several methods can be used to gather and analyze this information. Through the use of qualitative analysis in the field, and laboratory and statistical analysis, a soil can be compared and analyzed with a great deal of scrutiny. Four soil pits were excavated in Citrus County Florida and samples were collected from each master horizon. Through the use of qualitative and quantitative analysis these samples were compared and analyzed in order to identify unique, as well as homogeneous features. It was determined that the soil profile designated Old Pit was different than other profiles because of landscape position and variations in parent material. Landscape position (ie. slope position) also influenced the genesis and evolution of the soils in the other three profiles(Profile 1, 2 and 3).