Easy way to level up heroes?

I'm just wondering is there any easy way to level my heroes to level 20? I'm fed up with level 16's that I can never use

Thanks in advance

Bring them along with you to random explorable areas? Really that is probably all that can be done, aside from XP scrolls.

You could use the wurms in elona desert

Can you explain in more deatil about the wurm thing please?

Do quests. Heroes get exp from quests, so make sure to have your heroes with you every time you accept a quest reward (and if you are in a town, you can switch from your high level heroes to your low ones and then take the rewards).

Also, your heroes can never be a higher level then you. Ignore the wurm thing. If you aren't far enough along in the game for em, it won't matter. And you should be able to level them via normal play easily enough.

Get out from Remains of Sahlahja to The Sulfurous Wastes, bring only 3 heroes without henchmen and a scroll to make it faster. Get on the wurms and kill until the scroll rans out, repeat. They should be level 20 in 2-3 runs or so, it's pretty fast.

I've been bringing along my lower-level heroes while killing the Djinn between Dzagonur Bastion and Honur Hill. Djinn and Roaring Ethers are not difficult to kill, and you can collect Lightbringer points while doing so (assuming that you're not yet rank 5). There's probably faster ways, but as it's a "kill two birds with one stone" sort of thing for me, that's what I've been going with.

1)Map to Elona
2)Map to Bone Palace
3)Take 3 heroes with you and a few henchies if u like (smaller your party size the more XP you get)
4)Hop in wurm
5)Aggro EVERYTHING IN SIGHT
6)Use a XP scroll
7)Go AFK
8)..................wait 5 minutes
9)PROFIT!
10)/resign
11)rinse and repeat

If you need any more details go find it yourself. Use wiki or something. This is a pretty easy, brain dead way of lvling your heroes. You can't possibly mess this up. This is the fastest way to lvl your heroes. The mobs are LARGE. Faster then the suggestions above my post by a long shot.

wurm farming is an effective way to lvl up heroes because even if your heroes are lvl 6 they have the same health, armor, and energy in a wurm.

Also what i like to do is complete a quest, but don't take the reward just yet. I put the three lowest leveled heroes in before I get reward so they get the exp.

Flag them into a portal as you're about to instagib a mob of monsters (eg kegging + flag heroes through portal as you start dropping)

Yeah using the junduru wurms to level em up in HM (or NM) nice and fast.