Damariscotta River Association (DRA) invites the public to meet Poison Ivy (or Ivy for short), a friendly witch in search of ingredients for her potions. Ivy and a cast of non-scary animal characters will be found along the self-guided trail at the DRA’s first ever “Halloween Haunts” Family Fun event on Sunday, Oct. 29, from 5 to 8 p.m. at DRA Great Salt Bay Farm, 110 Belvedere Road in Damariscotta.

All are invited to walk the trail and follow Ivy’s story by reading the signs along the way. It turns out the animals she meets are not very helpful – after all, what frog wants to give up its toe? However, Ivy does her best, with a little assistance from passers-by, who will help her by sorting animal bones.

The “Gross-ology Lab” will offer gloriously gross dissection activities indoors, where everyone will have the opportunity to take apart some owl “vomit” (pellets) and fish guts – and learn all about them.

There will be a crackling campfire outside, and plenty of popcorn for snacking. Those who bring a few apples for the cider press can also enjoy some fresh cider!

Costumes are encouraged, and a flashlight for the self-guided trail is recommended.

To help with planning, registration is required. Call DRA to register at (207) 563-1393. Families can indicate a specific start time for the self-guided walk (every half-hour) when they call. The fee is $2 per person for ages 2 and up and DRA members are free. This event is rain or shine.