91. Reference : RS-2-1-1-1-091

Tham Poong Hoong,Maehongsorn

| 1998 | Surveying inside Tham Poong Hoong | Slide

92. Reference : RS-2-1-1-1-092

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Edward Harris who invented Harris Matrix was at Tham Bor Krai | Slide

93. Reference : RS-2-1-1-1-093

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Edward Harris who invented Harris Matrix was at Tham Bor Krai | Slide

94. Reference : RS-2-1-1-1-094

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Way to Tham Bor Krai | Slide

95. Reference : RS-2-1-1-1-095

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Way to Tham Bor Krai | Slide

96. Reference : RS-2-1-1-1-096

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | David Pierce was at Tham Lang-jan | Slide

97. Reference : RS-2-1-1-1-097

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Environment around Tham Lang-jan | Slide

98. Reference : RS-2-1-1-1-098

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Environment around Tham Lang-jan | Slide

99. Reference : RS-2-1-1-1-099

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | The entrance of Tham Bor Krai | Slide

100. Reference : RS-2-1-1-1-100

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Condition inside Tham Bor Krai | Slide