|
J. Harlen Bretz explored many of these with his dog; in his book, these "of Missouri", he called them "valleys with roofs" |
caves
DD
|
$1,500 |
J |
GEOLOGY |
2020-11-11 |
#8278 |
|
Do we have to spell it out for you? Speleology is the study of these |
caves
|
$1,600 |
DJ |
GEOLOGY |
2003-09-15 |
#4371 |
|
Deposits inside these are called speleothems & include stalactites & stalagmites |
caves
|
$2,000 |
DJ |
GEOLOGY TEST |
2002-09-13 |
#4145 |
|
Stalactites & stalagmites are 2 types of dripstones that are commonly found in these places |
caves
|
$200 |
DJ |
ROCKS & MINERALS |
1993-06-24 |
#2044 |
|
Speleothems are oddly-shaped rock formations found in these |
caves
|
$400 |
J |
ROCKS AND MINERALS |
1991-09-03 |
#1607 |