The redone map has gone over rather well. The Columns using dynamic lighting look fantastic and give the place a lit but of an eerie feel to it which was perfect. Photos here I used for atmosphere and to describe the ruins on the service at Mars Ultor. I used the modified map for below ground ruins..in what I claimed was an older version of the temple that sunk in early 300 AD.

Here is a small outside area of the map with dynamic lighting in affect. I think it gives a decent impression of what the players could see. Keep in mind what looks like a shadow here was an area they could not see at all.. so something could always be lurking behind a pillar.

I am Still working on it..but I am going for sunken in the ground and have an old stone stairwell connecting it. I may leave it at this and add dynamic lighting walls etc in VTT or perhaps add cavern floor and do some natural passageways leading off.. will probably add some random boulders and ruined items in the area.

step 1 done..note I can now see the BBQ items in the firepits.

I will check out the two links to assets above..and no i had not noticed the hidden layer.

@JimP That site is very cool though I have only had a chance to take a quick glance at it.