Don't do it! Flares are incredibly harmful to cave life, as well as cavers. Also don't burn magnesium flares in caves either. Sure, they are bright and cool (oooo, pretty colors!), but go completely against the modern "leave no trace" ethics we promote. Keep those things as simple historic and cinematic footnotes, please!
-- Crash, concerned cave biologist Confidentiality Note: This email and any attachment to it are confidential and protected by law and intended for the use of the individual(s) or entity named on the email. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination or distribution of this communication is prohibited. If you have received this communication in error, please notify the sender via return email and delete it completely from your email system. If you have printed a copy of the email, please destroy it immediately. Thank you
