My manager has just returned from a fortnight in Maine (she loved Portland) and tells us of an encounter with a snake, in Baxter Park?

It was yellow with some markings and that's all she registered before she screamed and broke the 4 minute mile downhill over rough terrain. She doesn't like snakes... but she's interested to know what it might be, and so am I.

If anyone herpetologists out there can help please?

They were walking up towards a waterfall, so the terrain would have been hilly with undergrowth.

LTS