4441. Reference : RS-2-1-7-2-090

Tham Poong Hoong,Maehongsorn

| 1998 | the entrance of Tham Poong hoong | Slide

4442. Reference : RS-2-1-7-2-091

Tham Poong Hoong,Maehongsorn

| 1998 | Surveying inside Tham Poong Hoong | Slide

4443. Reference : RS-2-1-7-2-092

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

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

4444. Reference : RS-2-1-7-2-093

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

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

4445. Reference : RS-2-1-7-2-094

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Way to Tham Bor Krai | Slide

4446. Reference : RS-2-1-7-2-095

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Way to Tham Bor Krai | Slide

4447. Reference : RS-2-1-7-2-096

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

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

4448. Reference : RS-2-1-7-2-097

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Environment around Tham Lang-jan | Slide

4449. Reference : RS-2-1-7-2-098

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | Environment around Tham Lang-jan | Slide

4450. Reference : RS-2-1-7-2-099

Tham Bor Krai and Tham Bor Krai, Maehongsorn 1998

| 1998 | The entrance of Tham Bor Krai | Slide