A
B
C
D
E
100

extremely big

vast

100

very old  

ancient

100

not easy to find

hidden

100

almost never

seldom

100

not allowing water to go through

waterproof

200

complete and in the original state

intact

200

a boy or young man

lad

200

a large stone structure or underground room where someone, especially an important person, is buried

tomb

200

really or certainly, often used to emphasize something

indeed

200

a room or space used for a particular purpose

chamber

300

something that exists and can be seen, felt, tasted, etc., especially something unusual or interesting

phenomenon

300

a usually long and narrow part of a building with rooms on one or both sides, or a covered path that connects places

passage

300

to be in a place, on a thing etc. and make it look more attractive

to grace 

300

Sloping towards the inside

inward-leaning

300

almost

virtually

400

a large pile of earth, stones, etc. like a small hill

mound

400

either of the two occasions in the year when the sun is directly above either the furthest point north or the furthest point south of the equator that it ever reaches. These are the times in the year, in the middle of the summer or winter, when there are the longest hours of day or night

solstice

400

to become involved with or take part in something

to partake

400

someone who gets money by deceiving people

fraudster

400

to move or come together in large numbers

to flock

500

public attention and interest

the limelight

500

to take something away from someone, sometimes in a way that seems unfair or dishonest

strip sb/sth of sth

500

the surface layer of land on which grass is growing, consisting of the grass and the soil in which its roots grow

turf

500

the edge of a raised path nearest the road

kerb

500

to show clearly how good, strong, or effective something or someone is

to tribute to something/someone