What is Mammoth Cave known for?
Being the biggest cave system on Earth.
Why is Indiana significant for karst?
It has a lot of underlying limestone.
What human activity affected the Burren?
Deforestation in the Bronze Age.
Why are stilling wells not very useful in karst?
Measuring the water table is not useful.
Why is dye tracing better for karst systems?
It tracks water movement more effectively.
What properties make dyes suitable for tracing?
Neutral buoyancy, fine particles, bright colour, non-toxic, inexpensive, easy to use, soluble, similar density to water, resistant to chemical change, quantitatively analysable.